Doesn't that only apply when there is another force in the opposite direction (ie. velocity up the slope)? I believe when this other force isn't there, Fg should be positive which is logical because the box is released from rest and begins to slide down in the direction of Fg so there is no reason why Fg would be negative. Instead it will be added to the net force of the object.
It’s sin 20 because it is a force supporting the motion of the block and it is parallel (horizontal) as we are not using friction that horizontal force is the only force that is applicable therefore it’s a matter of using Trigonometry to calculate F which is 2gSin20
lmao i was stuck on 8:42 for a while. It turns out you cannot cancel the 10s from top and bottom if you have subtract or addition on the top lol
hahah you sound like bear grylls
Super
isnt the answer at 12:30 0.16 to 2sf and not 0.15?
Nah your value comes out at 0.146791097
No ... I usually use g as 9.81 m s^-2, and using that, I got 0.147 m s^-2 (3 s.f.)
Why is the first answer positive instead of negative 🙄🙄🙄
Doesn't that only apply when there is another force in the opposite direction (ie. velocity up the slope)? I believe when this other force isn't there, Fg should be positive which is logical because the box is released from rest and begins to slide down in the direction of Fg so there is no reason why Fg would be negative. Instead it will be added to the net force of the object.
bro thank uuu
Why is it sin 20 ?
Markus Oliva yh I’m confused aswell
Watch the videos on TLMaths, it is explained in more detail.
It’s just SOH CAH TOA :)
It’s sin 20 because it is a force supporting the motion of the block and it is parallel (horizontal) as we are not using friction that horizontal force is the only force that is applicable therefore it’s a matter of using Trigonometry to calculate F which is 2gSin20
♥️♥️
Very Helpful!!!
6:35 must convert 10kg into weight. (10kg)(9.8)
at 4:35 what is the M friction thing? what does that mean
its the coefficient of friction
Why is the first answer positive instead of negative since it's in the negative x
Yeah it's supposed to be negative