Whether a force is pushing clockwise or counterclockwise depends on where we choose the pivot to be. If the beam is remaining at rest, then we can actually choose ANY point as the pivot, because the torques balance around every point we might choose. At that part of the video, I'm assuming that the left edge is the pivot point. When we imagine the left edge remaining fixed, then the right edge can swing up and to the left (in a counterclockwise fashion), or the right edge can swing down and to the left (in a clockwise fashion). The finger is trying to push the left edge upward, in a counterclockwise fashion.
I computed an unrounded value of 264.6 N rather than 264.4 N, which is why I rounded up. If I made an error and the correct unrounded value is 264.4, then you are right that it should be rounded down.
Finally someone knows what he is talking about ❤
This helped with my physics assignment for my school. Thank you!
Really helped out with my AP Physics Homework. Thanks!
Wow nicee😍😍
I am confused on how the finger force is counterclockwise. It is pointing up so wouldn't the plank rotate clockwise?
Whether a force is pushing clockwise or counterclockwise depends on where we choose the pivot to be. If the beam is remaining at rest, then we can actually choose ANY point as the pivot, because the torques balance around every point we might choose. At that part of the video, I'm assuming that the left edge is the pivot point. When we imagine the left edge remaining fixed, then the right edge can swing up and to the left (in a counterclockwise fashion), or the right edge can swing down and to the left (in a clockwise fashion). The finger is trying to push the left edge upward, in a counterclockwise fashion.
because remember when he started he said that he picked the point at the very left as his pivot point
great video
Thank you alot
You loaded an video of translational motion?
where did 9.8 come from?
Great question! That's the strength of the gravitational field at the surface of Earth (also known as the downward acceleration due to gravity)
that's help me a bit
You're welcome!
how is the final answer 265 . Should't it be 264 as the un rounded value is 264.4?
I computed an unrounded value of 264.6 N rather than 264.4 N, which is why I rounded up. If I made an error and the correct unrounded value is 264.4, then you are right that it should be rounded down.
thanks
Your sounds seems like some one we All know ...