The Lethal Force of Lawnmowers - Mythbusters - S09 EP02 - Science Documentary
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- เผยแพร่เมื่อ 15 มี.ค. 2024
- Join the MythBusters as they delve into the world of lawnmowers and bullets to determine whether rocks flung by lawnmowers possess the same deadly force as bullets. With high-speed cameras and meticulous testing, they aim to uncover the truth behind this intriguing myth. Don't miss the explosive experiments and surprising results in this action-packed episode!
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Join the MythBusters in their thrilling quest to debunk myths, challenge urban legends, and test movie scenes in this action-packed TV series! With hosts Adam Savage and Jamie Hyneman leading the charge, buckle up for a wild ride as they employ rigorous scientific methods, high-octane experiments, and jaw-dropping explosions to uncover the truth. From epic car stunts to mind-blowing special effects, witness the power of scientific inquiry as myths are either confirmed or shattered. Get ready for an adrenaline-fueled adventure filled with excitement, humor, and the ultimate quest for knowledge. Tune in now and unlock the secrets behind the myths!
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46:25 This is actually what's the most dangerous, rocks flying away much less so. And it happened to a colleague of my father many years ago. He was standing a good distance from a lawnmower that hit a rock, making it fail with a blade-off incident. The blade hit him right in the chest causing near-fatal damage and it barely missed the heart. He miraculously survived the incident thanks to a family member who was an off duty ER doctor, who happened to be there and performed vital steps. In summary: always stay far away from lawnmowers, no bystanders, no children!
I will remember this, thank you!
Is it just me, or Jamie is smiling and laughing much more than in the earlier episodes?
For sure, Adam has confirmed multiple times that in the early seasons of the show, Jamie wasn't too sure about their chances of success or what they were even doing with the show. Now we see them as the show has taken off, and he sees now what they are doing is working
Love his giggling 😄@@p24p14
@@p24p14 You'd think that realization would come after 3 or 4 years, not after 9.
He knows the show was almost done at this point . He was happy because he knew his time with Adam was close to over!!
@@gownerjones Jamie is a special kinda guy
Also like someone else said, show was over at this point, must've felt good for that reason too
I kinda prefer the old backfround music from the older seasons, this new one just feels like the show trying to be "hip and cool with the kids"
can you blame em?
Total agree
totally agree
Original air date 2011 they were trying to be hip and cool it's off re-watching today. Even worse, the added suspense building sounds throughout...
Plausible but unlikely. It’s up to The producers to bust this one
The beginning of the end of mythbusters that we all love.
It's really bittersweet to watch this season again
Absolutely
...yes, everyone says that on every episode LOL
we get it
I never watched it, it wasnt that bad.
@@gabrielv.4358 You know you can just say nothing when you don't relate, right? You don't have to embarrass yourself with a bad take.
Having worked as a landscaper I can tell you how dangerous debris and mowers could be. One time I was using a new mulcher with a big Kawasaki engine on and I hit what must have been a rock which flew out and hit a fence behind me, there was a bang I heard from the mower when it hit and when it struck the fence, to me both sounds happened at the same time. I went to check the fence and it had big dent in it where it hit, as if it had been hit with a pickaxe. It was a proper, solid wooden fence as well, thick like wooden decking. I must have been around 25-30 yards away from it, so that’s some speed and force. Nowhere near the damage a handgun would have done but very nasty all the same, I’m glad that didn’t hit me!
My zero turn pulled a soccer ball sized rock out of the ground and sent it sailing through the air about 10 metres. The impact bent 2 of the blades at 90° and shifted the whole mower sideways. Gave me respect for the energies involved
@@jeremymcadam7400 Indeed! I’ve bent a fair few blades hitting stuff like that. One time I was using a zero turn in thick grass on a council estate when there was this almighty bang from it, so loud that my colleague heard it from over a block away while using another machine with his ear defenders on. My immediate thought was that I’d wrecked the crank shaft by hitting a rock, but you know what it turned out to be? A big, full milk carton! One of those plastic 3 litre bottles, or what was left of one anyway. I’d never have thought something like that could make such a loud bang.
Impressive
my dad used to golf in our huge backyard
one afternoon, a golf ball came flying through one of the windows of a spare bedroom (now my comic book room LOL)
he ran over one of his stupid golf balls
i totally forgot all about it unti seeing this opening haha
@@Gravydog316 You’ve just reminded me of something there! Last summer I hit a golf ball on a ride on mower. There was this metal fence with the write strands between the posts forming a grid pattern about 10 yards away, the golf ball fired out of the mower and through one of those square holes and off into the distance. The square holes in that fence weren’t much wider than a golf ball itself vertically, making that one hell of a shot that I could not have pulled off if I tried to by using a club. I looked for that golf ball afterwards but I couldn’t find it.
Thanks for uploading those!
39:06 the third guy behind Adam and Jamie is happy as hell
I love seeing this episodes, the storytelling it's top notch. You can tell they've been doing this for 10 years (both the hosts and the BTS team).
46:22, I experienced a comparable incident involving my lawnmower, and I am deeply grateful for the preservation of my lower limbs. Incidentally, the blade remains unaccounted for.
Tip
Whenever adjusting mower blades pull the spark plug lead off.
EDIT: Made a mistake in math, it's diameter * PI.
When first hearing of a myth, one would do well to do some basic math.
Let's start with a simple estimate. Lawn mower RPM = 3600, blade diameter = 21" (53 cm)
Circular path of blade tip in cm = 53 * PI = 166 cm
Revolutions per second = 60
Velocity at blade tip in m/s = 60 * 1.66 = ~100 m/s
So, the potential velocity of any projectile, assuming a perfect situation, is ~100 m/s.
The velocity of a handgun bullet is in the supersonic range, above 340 m/s.
Impact energy is derived from '(mass * velocity^2) / 2'
Where mass is in kg and velocity is in m/s.
Meaning, a bullet that is traveling 3 times faster than the tip of the lawnmower blade is always going to carry more energy than any small rock you fling at 100 m/s.
In the case of a bullet, say a 9 mm, it weighs about 8 grams and is traveling at 350 m/s.
energy = (0.008 * 122500) / 2 = 65,536 joules.
To make a rock do the same at 50 m/s...
65,536 = (x * 10000) / 2
x = ~13 kg
So you need to fling a 13 kilogram (~26 lbs) rock with your lawnmower to give it the same energy as a bullet.
It's a show, they're testing those things for our entertainment.
Even if a theory is already proven people are still interested in whether or not it would work in reality.
Nice to see the energy at exactly 2^16 J
But yes, we don't need muzzle energy, we need impact energy.
My home stereo from 20 years ago was powered by a modified welder and a car battery acting like a giant capacitor, managed to squeeze 3000 watts RMS outta two excellent cheap 760 watt car amps by adding giant heatsinks to handle being overloaded. Had to run around manually adjusting power in and out lest the battery boiled or things caught fire, but when I cranked up the volume most people worried about the house collapsing on them. :)
ok Marty McFly
@@Gravydog316actually it’s kind of fun messing with big batteries and huge power to deafen yourself correctly
I'd trade all these fancy slomo effects to have CGT back.
46:22 I love when they overdo that much, but that was scary as hell. Jesus christ.
Great episode! Thx for uploading!
The moment when the myth as in the original telling is pretty much busted and they ask "but what does it need for that thing to happen"
God I love mythbusters! You are doing the world a service!
they love you, too
i want the final scene of braindead re-enacted
umm your pic looks like you have a shotgun barrel in your mouth 😐
might want to try again, chief
26:33 Adams laugh right there cracked me up
I'm really glad lawnmowers do not usually turn rocks into deadly missiles, or my dad would have died a day before his 70iest birthday. The rock hit his face just millimeters below the eye, causing a hematoma but fortunately not dealing any permanent damage. Ever since, I steer clear of people with lawnmowers...
Adam is speachless
42:51 Well, Styropyro tested roughly that with a garden full of batteries switched in series. And it is at least as terrifying.
Don't think they ever revisited that rig - something that could slice through rollcage steel tubing is exceptionally lethal.
2:28 Holy... I never expected to hear a pun like that from Jamie. XD Usually that's more what Adam would say.
23:49 Not sure if its impressive or scary that Jamie knows the blade came off from simply HEARING it. XD
Jamie’s Lawnmower From Hell kind of went overboard with it’s intention of going over the top and I’m just glad the sheered blade didn’t hit anyone or they’d be missing a leg or two
Huge disappointment with the mower from hell.
Jamie doing a wheelie is perfect :D
Man I remember seeing the update graphics for the first time on TV, really felt like a new era
Edit: oh yeah, forgot the "new" intro, definitely prefer the old one
The rock may have the energy of the bullet but not be as lethal. For example, the recoil of the gun has as much energy or more as the bullet.
When I used to work for my local council one of our favourite tricks when cutting grass was to use the strimmer line to knock small stones and plastic bottle caps at coworkers could get a good 15-20m if you angle it right
It's funny how they started putting that disclaimer in front of all the episodes after the cannonball incident.
Which incident was that?
@@theunknownentity1830 at the end of season 7 they fired a cannon and missed the barricade and ended up smashing through someone's house
Lol what is the title of the episode?
@@demonicravergaming.4766 Battle of the Cannonballs!
Was uploaded on this channel just a few days ago
Going to watch it now.
Joys of TH-cam premium. I can watch like every EP in a week thanks to no ads
This episode really highlights the budget cuts they had to go through.
How much of that inertia in the pendulum test was compressed air from the cannon.
Thankfully they didn´t test the Dixie lawnmovr OCC built, with a V3 S&S engine on it! So great to see Jamie having fun.
how far would the pendulum swing from just the pneumatic fired empty.. i recon some was due to the oomph of the air...
16:53 * concerned walrus noises *
Mythbusters improved quite a bit, wow
I don't think we've ever heard Jamie laugh like this.
It only happens when they're about to unleash destructive powers hitherto undreamt of.
Thanks.
it's a shame they didn't test the glass guillotine with fake skeletons inside the dummies. I think with some structural integrity, the human body wouldn't be able to bounce away from the blunt edge like that.
Yes
There is a crucial methodology flaw with lawnmower test. What was the weight of the rock that flew out of the lawnmower with the speed of 400fps and just how far was it able to travel? Initial speed of 400fps doesn't necessarily interpret to your neighbor being "shot" with a rock while in his living room. Air resistance and uneven shape of the rock begin to play important part at these velocities. The only conclusion that could so far be drawn is - definitely don't stand next the side of the lawnmower which had its stone guard trap door removed, as you will get seriously injured. Or worse. But as far as "my mother in law was shot in our living room with a rock that flew from the faulty lawnmower of my neighbor across the street" - I remain unconvinced.
I think there is also a big difference with having a combustion engine or a electric motor. Especially as the motor hat much higher power. I would think the lower power results in the blade slowing down a lot upon impact resulting in less energy transfered to the rock.
The DC engine also was probably faster than the mower engine, I believe
Those rocks seem...a poor choice. Why didn't they pick up rocks that don't just up and shatter dissipating large chunk of the energy? Ones that would have used all the energy of the hit (almost) into being sent flying? I don't get it. It's not like rocks cost anything or that it's hard to find various kinds of rocks, either. Yet they went explicitly for ones that shatter on reasonably small impacts similar to bricks. They do well under high stress, but terribly under impact.
They look similar to decorative rocks you can buy bags of at the hardware store, maybe someone decided that those would be the most common rock someone could encounter when mowing the lawn. In my area most driveways range from very small pebble stone to different types of asphalt, asphalt once it starts to break pieces lose from the driveway can almost disintegrate in a similar fashion when hit by a lawnmower.
@@Trialwolf Those standard hard, gray rocks and pebbles with firm, tough build are very common as well. Unless someone went literally gung-ho on turning their garden upside down several times and sifting through it all, or they are in one of the more desert-like areas, chances are high that you will find a handful of them in a garden.
Considering that it's about the 'worst case scenario', picking stones that are almost the 'best case scenario' (aka. potentially the least destructive) for it seems like a poor choice.
I'm guessing it's either for "worst case scenario" or for safety concerns they didn't want too hard a debris because... You know, flesh and bone people nearby high speed projectiles
Yes!
I had a electric lawnmower that usually broke the stones to small shrapnel. The rpm is much higher than in gasoline engine.
The opening was backside for collection basket. Never came in my mind to leave the door open to test, if the flying stuff would make holes to my feet.
my dad used to golf in our huge backyard
one afternoon, a golf ball came flying through one of the windows of a spare bedroom
(now my comic book room LOL)
he ran over one of his stupid golf balls
i totally forgot all about it unti seeing this opening haha
My grandpa also DIYe'd a electric 220v mower, its insanely strong, it really destroys the rocks
I miss this series
Massa demais
I got shot in the arm by a rock from a weedwhacker at 30 ft.
No blood from that, but I imagine a mower blade has far more force behind it.
Right off the bat, this myth is plausible.
Daily life has a lot of scenarios that aren't accounted for. This is good science
No idea if tempered glass will work to bisect a person, but I remember from when I was in highschool, so early-mid 80s, possibly a couple years later, I saw a news story of a kid who ran into a glass sliding door, and it nearly cut all the way through both of his thighs, just a thin sliver of skin and meat keeping the lower legs from falling right off him. If a glass shard about 3by5 feet can cut through 2 thighs from just a drop of a yard or so, a multistory drop of a whole ass pane should do short work of a body.
20:25 My granpa made one literally like that. The thing spins to full trottle and its insanely scary. That motor is strong also. (220v)
46:30 one of the most terrefying slowmo footage i have ever seen, that thing can amputate your foot without any problems...
that ending was truly terrifying 😵 I think they were lucky it broke 😅👍
My 3.5 HP - 18" cut width lawn mower threw a rock through the back cover, making a hole in it, the rock was the size of a large chicken egg and hit me in the "crown jewels" and almost knocked me out.
The cover was made of an ABS & Polycarbonate blend so I reinforced it with a 3 mm (¹/₈") thick steel plate just in case.
That blade flew to the opposite side and hit the balistic shields in that low angle, would mangle everyone there
It seems like the dummy squashes down when it's hit then bounces back to its original shape. I would have thought a human body with bones would not absorb the impact like that. Like if you dropped an axe on a basket ball it will bounce off but if you drop it on someones head it will dig in.
I don't know, honestly I fast-forwarded through the bit where he was making the dummy so maybe IDK what I'm talking about haha
IMDB has this episode marked as Accidental Ammo S13 E9, really wish they uploaded in sequential order :/
but, hey Mythbusters is better than no Mythbusters
Yes this is not season 9 episode much later one cos back In days i stopped watching series when kari,tory and Grant left
He already said they’d been using that location for at least 10 years. If it’s one season a year it can’t be season 9 no matter how you look at it.
my dad used to golf in our huge backyard
one afternoon, a golf ball came flying through on of the windows of a spare bedroom (now my comic book room LOL)
his ran over one of his golf balls
i totally forgot all about it unti seeing this opening haha
38:38, they never actually show us high speed footage of the rock impacting the test rig. The myth is about a rock impact, not a rock plus and immensely concentrated air blast. Pretty basic math can tell you the impact energy of each.
While I agree the test was flawed, I can tell you from experience, the right rock from the right mower can easily have that energy and more
@@jeremymcadam7400 I’m not debating the potential energy of the stone. I’d just like to see it represented with more appropriate testing methodologies.
14:02 😂😂😂
Just so you know the USA has dropped the blade tip speed to about 2/3 of what is used to be
Australian mower manufacturers do the ball bearing test where the mower is run over ball bearings and the discharge pattern is examined .
Nothing is allowed to get above knee height on a walk behind and I think it is waist height on a ride on.
Ball bearings are used so they results only have 1 variable, the mower.
The fewer the rocks the harder & further they fly because if you have 50 rocks bouncing around under the deck the hitting each other .
Several US made mowers have failed the Australian safety standard so needed modifications .
And yes the rocks can come out fast enough to blow through a 1/4 thick aluminium deck casting .
Can you make things more complicated. You only use the pendula when you dont have a chronograph to calculate the energy. If you have the muzzle speed all you need is the weight of the rock to calculate the energy. I think a scale would have been more appropriate but not as cinematic....
Also ... the gun is too close to the pendula, you are transferring energy from the gas instead of just the bullet.
I wondered too did that air from the air gun push that pendulum much? Or differently/more than blast from the guns?
the pendulum, its recoil, was shwoing the momentum NOT the energy and as a result they massively over-estimated the energy (destructive effect) of the much slower rock. mythbusters (unfortunately) busted badly.
Superb TV show nonetheless
When will mythbusters be back.. so many myths in recent years needs busting with all the new tech comming out.
ballistic pendulum does not measure energy,
it measures momentum (m * v)
energy is 1/2 m * v^2, so the .357 is probably more powerful
Love the show, but had anyone noticed there's a head of a bear on the wall, top right corner at 14:29 or am I halucinating? XD
44:38 that’s a whole lot of water,motor, and current to be haphazard with…not to mention the giant conductive steel plates it’s all mounted to, which includes Jamie. Lots of short-sighted elements this season I’m noticing
You could submerge that thing in the sea and not get electrocuted
@@jeremymcadam7400 you’re right, you would not get electrocuted if you submerged it in the sea. However, Jamie is not driving it in the sea. Under the circumstances in the video, any test involving water should’ve been out of the question.
I'm surprised that they were surprised that the kinetic energy of the rock was greater than the bullet - I suspect that was an act for dramatic effect. Because if you know the weight and velocity, calculating the kinetic energy is trivial:
Energy = 0.5 x mass x velocity squared.
Tombstone would be proud of that mower, as would Grant! 🙏
Sweet new intro.
Are rocks from a lawnmower dangerous? Yes, but likely not as much as a bullet (or at least not a larger one like a .357 - probably a .22 at most). I was inadvertently a sender of such a rock via a mower - again, inadvertently, as in, I had absolutely no intention, let alone plan, for it, but it still happened.
To set the scene, I was riding a zero-turn, not too different from the one Jamie brought out in the beginning of the testing. I was mowing the small spacer of grass between the fence and the steet. Me and the mower were bouncing around a lot because the tires were hard. Why were they hard? Because the lot was in a hilly area, and the hills were filled with rocks, with limestone being the most common by far. Because of the very rough terrain that was not that conducive to grass (but always weeds), your typical pneumatic tires would lose pressure far more often than it normally would, and it would not always be from a puncture (in fact, punctures were the rarest method of depressurizing them). The mower was my parents', and out of being fed up with practically constantly fixing the tires, they had them filled with hardening foam, which eliminated the flattening while not requiring a shell out for custom-made wheels, but it made ride comfort pretty much nonexistent, hence the excessive bouncing mentioned earlier (I never had an instance of being tossed off the seat enough to trigger the pressure kill switch underneath it, mostly due to never driving it quickly, even before the hardened wheels).
As I was reaching the end of the aforementioned section I was mowing, bouncing along the whole time, I ended up hitting a rather rare big bounce. It sent the mower up more than usual, and upon landing, I heard a very audible smash, even through the hearing protection I was wearing.
As it happened, a large pickup truck was driving down the street on the opposite side that the lot was on. Evidently, the passenger of that truck decided to try his hand at using me as target practice. Now, I am assuming that it was a man, but I do not actually know. However, because I am a man myself and one with quite a few friends and relatives in law enforcement, I know that such a stupid decision is made by men far more often than not (yeah, statistically, not even teenage boys come close to the frequency or level of stupid decisions made by supposedly grown men, particularly those in the 20-40 year range). I nearly ended up a victim of that "Soda in the Windshield" myth, only without a windshield for me.
Now, I say "nearly" because the timing between my reaching the end and stopping and the @$$hole's toss at me ended up making his toss fall just short of me, easily coming within a foot of me. The aforementioned final bounce from earlier, the one with the audible smash, was because I had come done on a sizable rock, a rock that was too big to be kicked out by the mower blades but strong enough to shatter without crumbling - mind you, I have no way of knowing what specific kind of rock it was, and all I feel confident in saying is that it definitely was not limestone, which I had hit often enough whenever mowing the lot and throwing so much white dust out the chute.
Furthermore, because of the damage caused by the rocks that were hit (even limestone can leave a little damage, but it might be one of the safer ones to hit due to how easily it crumbles to dust upon high-speed impacts), my father had removed the chute guide, so the there was nothing other than the blade housing to get in the way of what could possibly be launched out. Also, my father had gotten ahold of tougher blades that could be fit to the mower, and he had sharpened them even further in an attempt to make it easier (or maybe just possible) for them to cleave through any hit rocks; whether or not the sharpening actually accomplished this, I have no idea, though I lean towards "not."
So what happened was that as I stopped the mower, narrowly dodging the @$$hole's cup and coming down hard from the bounce, a massive cloud burst out from the chute section, and I managed to catch the sound of a few impacts after the big smash. I did not hear anything beyond the mower (which continued to run and operate normally, including the blades still mowing and not being damaged or thrown off-balance in any way), but I did turn to try to catch more about that truck, only to see that truck swerving a little as the arm that tossed the cup at me was yanked in, trailing a little red.
Yeah, apparently, the rock I hit had more-or-less turned into an impromptu birdshot, and the @$$hole's arm happened to get at least one piece in his arm. Mind you, all I can say is that something had hit his arm and penetrated it, drawing blood as a result. I do not actually know if it was a piece from the rock or something else, but I did not see any other debris in the section that caused the big bounce before I mowed it, and the grass that was there was not that thick or tall to begin with, so I am inclined to assume that it was the rock. Also, while I can say that there was an entry wound in the @$$hole's arm, I have no way of knowing beyond that, and frankly, I doubt there was an exit wound or that the injury was anything particularly severe (yes, a rock in the arm would likely still be a bad injury, but I highly doubt it resulted in any major damage on his part).
To close this story, I never heard or saw anything that could have suggested that it was about the @$$hole. Still, I would like to think that he concluded that experience was God's way of telling him to quit being an @$$hole. Did he actually stop? Probably not, but given what happened, is it wrong for me to hope that he did because of it?
31:28 something similar happened on 9/11 when a guy got hit by a large piece of glass after the second plane hit.😵
18:25 That is EXACTLY the difference between them and I I'm much more like Jamie than Adam in that sense.
I cant understand that force meter. Like rock, i could easiky punch or kick that plate past 66 degrees. Still i would rather get kicked or stoned than get shot by 357...
no you can't
you are fake mythbustin'
Something similar happened to me in a camground, i was cutting the grass when the lawnmoer it a rock and flew to the windshield of the neigbor's car and crack it. Lucky no budy got hurt.
Muskets were slower than that rock, so yeah, it's faster than the musket and the slowest bullet.
That is why the sling was such a dangerous weapon! King David vs Goliath.
Oof, this episode seems to have a lot of “input” from the network. Kinda feels like a pilot episode, instead of decades of experience as they so often repeat.
budget cuts
Mythbusters,please pull of the spark plug Boot,before working on the lawn mower/blade.that way,the lawn mower can't Start,from itself.just for Safety.
Come the zombie apocalypse, I want me one of them Jamie's special edition lawnmowers!
??? what zombie apocalypse?
@@Gravydog316 come the zombie apocalypse
??? what zombie apocalypse?
Math can tell us the energy in the projectile, but im glad they used the measuring rig anyway
Adam's idea to compare the energy of the bullet and the stone won't do what he wants it to. Instead of comparing energy, he's comparing momentum.
Yeah, a simple multiplication (mass * speed) would have sufficied
@@remiheneault8208Half of the things they do can be done on paper with math. But it wouldn't make for good tv.
These episodes are way better to the older ones with grant, tory etc
i feel so old seeing these
when i was like 3, Kari was my hero
Couldn’t have paid me enough to stand behind that mower…
i remember after seeing this episode for first time that i could have died as a kid, i used to throw some rocks on lawn when my brothers mowed it to see if they fly
my late dad haha
"I have never worked on a Saturday & I never will."
(& he didn't. me either)
my dad used to golf in our huge backyard
one (Sunday) afternoon, a golf ball came flying through one of the windows of a spare bedroom & stuck in the wall, about an inch from the mirrored closet doors
(now my comic book room LOL)
he ran over one of his stupid golf balls
i totally forgot all about it unti seeing this opening haha
Why not just compare the weight of the stone to that of a bullet? Yeah, I know ... math isn't as spectacular
I lost my toes on one of these lawnmowers
Cool
About the falling window pane slicing up a human. There is a clip on youtube where this happens, the person is not sliced in half tho, he survives and walks aways but it looks like it hurts. Search for World's luckiest man narrowly avoids death by falling sheet of glass.
4:45 A whopping 5.6 Hp on an ordinary lawnmover, wtf?!
Spacing the rocks out would allow the blades to reach full rpm before the next stone is run over...
Need to test a riding lawn mower
That is not one inch armour plate, maybe 1/4 inch,
Now we got a new myth to debunk, who measured it wrong.
Was getting major final destination vibes from this one
Where are the Factcheckers on those mythsbusters ? 😅
21:47 Wouldnt the electric motor have more foot lb torque then a gas motor being magnetically powered ? Food for thought 🤷♂️
well the rock has the force similar to a bullet, but for ease of the watcher I really hoped they included the force needed for blunt trauma or if it would penetrate the human body
e=mc², no need to build the hammer swing, just compare the weight of the rock. But, I get it, the whole show could theoretically be calculated 🤪
It depends on the mower. I've seen mine pulverise a brick without any problems.
Jamie hates heights.
Grant built robots, Jamie built cannons. I just realized.
38:51 how can they say its the same test they werent even shooting from the same distance ?
in order for the tool steel blade of the lawnmower from hell to do that to the vehicle chassis, it had to have hit it on the back stroke, rather than on the forward stroke. so something in front if the blade would have taken even more force
Maybe I missed it, but did they somehow do the glass guillotine myth without once mentioning The Omen?
... modern mowers dont even have an opening for stones to shoot out from