Hi Sir, Thank you very much for the video and explanation. So basically I need to derive the equation of motion that describes the movement of the lower leg as a function of theta but I have no idea where to start. Please can you share your ideas or any references. Thank you!!!
His conversion from rad to degrees seems very off. I'd use the formula [degrees = rad * 180/pi] which gives 1.2 * 180/pi = 68.80 degrees which is approx. 69 degrees.
I used an iPad + Apple Pencil for this video. Some other videos were done with a laptop and external drawing tablet. You can see all the hardware and software that I use here: engineer4free.com/tools 👍
dϴ/dt = (d/dt)*ϴ = the derivative of ϴ with respect to time. d/dt is just the general notation for a time derivative. Check out videos 15 - 21 here: engineer4free.com/dynamics, but specifically video 19 will help you I think, as it goes over the derivation of the equations used here 👌👌
pi rad = 180 degrees, or otherwise 2pi rad = 360 degrees. So to convert between radians and degrees you need to use that factor. 1.2 rad * (360 degrees / 2pi rad) = 69 degrees
Hi I’ve seen this video and other ones like this and I still can’t solve my problem. A small child is playing on a merry-go-round that measures 24 meters in diameter. Determine her angular displacement if she rotates 160 degrees while playing.
Her angular displacement is 160 degrees, but it should be expressed in radians, which is 160 degrees * (pi/180 degrees) = 2.79 rad. It may be a trick question, or it may also be asking the arc length that she travelled (the lower case l letter from l=r(theta). Diameter is d/2 = 24/2 = 12m. So her path travelled, or arc length is l = 12m * 2.79 rad = 33.48m. But if the question really is asking for angular displacement, then its a stupid question and the answer is 2.79 rad.
I wish I saw this video 4 years ago. this will be my go to video every time I'm having a brain dead moment
Thank u so much sir 🙏 I swear your better than my physics teacher
Thanks =). Check out the full playlist here: th-cam.com/play/PLOAuB8dR35od-BJkNaUWbT8naOb0Y_gC6.html
Easily on par with Khan Academy, cant thank you enough
Thanks SoySaucce 😊
tHANK YOU, THIS HELPED ME TODAY!
Great timing :). I'll be putting out a lot more Dynamics tutorials soon too!
What are you doing here HUH
Ur gamer Ipodmail !!
Ur studying here good😮🎉
Now i feel like i can beat the hard university physics exam with your videos. Extremely excited to learn harder topic with your videos
Hi Sir,
Thank you very much for the video and explanation.
So basically I need to derive the equation of motion that describes the movement of the lower leg as a function of theta but I have no idea where to start.
Please can you share your ideas or any references.
Thank you!!!
When thisan replying to each questions herr in comment section. Thankk youu! I now have an idea!
I like your tutorials
What is the angular displacement if the initial position is 50 radians and the final position is 30 radians?
Thankyou very much 🙏
You're welcome =)
His conversion from rad to degrees seems very off.
I'd use the formula [degrees = rad * 180/pi] which gives 1.2 * 180/pi = 68.80 degrees which is approx. 69 degrees.
Thank u sir!
You’re welcome!!! 🙂
How is able to write in such a good handwriting?!!!!
I used an iPad + Apple Pencil for this video. Some other videos were done with a laptop and external drawing tablet. You can see all the hardware and software that I use here: engineer4free.com/tools 👍
Thanks
2:40 example
What is d in the angular displacement, have u made a video on that
dϴ/dt = (d/dt)*ϴ = the derivative of ϴ with respect to time. d/dt is just the general notation for a time derivative. Check out videos 15 - 21 here: engineer4free.com/dynamics, but specifically video 19 will help you I think, as it goes over the derivation of the equations used here 👌👌
Engineer4Free Thanks a lot
can you show how to calculate angular velocity and angular acceleration from this angular displacement example taken here please? Any video link?
Yeah see videos 15 - 21 here: engineer4free.com/dynamics 👌👌
How u got 69°🤔
pi rad = 180 degrees, or otherwise 2pi rad = 360 degrees. So to convert between radians and degrees you need to use that factor. 1.2 rad * (360 degrees / 2pi rad) = 69 degrees
@@Engineer4Free I know it
But Iam saying that u did calculation mistake 🧐
And nobody is going to say anything about how the answer was 69
🤪
Yea u care about that 🙂
Hi I’ve seen this video and other ones like this and I still can’t solve my problem.
A small child is playing on a merry-go-round that measures 24 meters in diameter. Determine her angular displacement if she rotates 160 degrees while playing.
Her angular displacement is 160 degrees, but it should be expressed in radians, which is 160 degrees * (pi/180 degrees) = 2.79 rad. It may be a trick question, or it may also be asking the arc length that she travelled (the lower case l letter from l=r(theta). Diameter is d/2 = 24/2 = 12m. So her path travelled, or arc length is l = 12m * 2.79 rad = 33.48m. But if the question really is asking for angular displacement, then its a stupid question and the answer is 2.79 rad.
@@Engineer4Free Thank you 😼
Ur really helping everyone bro ❤❤
69. nice.
🔄
@@Engineer4Free 😏
69° lol
who is pretty?