- #1
lc99
- 161
- 3
Homework Statement
A wheel is spun up from rest by application of a force applied to the rim of the wheel. Consider the wheel to be in the plane of the paper, rotating clockwise. This force must point in what direction.
1) at the bottom of the wheel, pointing right
2)at the top, pointing left
3) towards the center of wheel
4)into page
5) impossible to tell with the information
Homework Equations
T = Fxr
The Attempt at a Solution
I eliminated the first 4, but at the same time, i don't think the answer is impossible...
1) I don't think bottom of the wheel would be correct because if it points to the left at the bottom then we also have centripetal force inward to the center. The resultant torque would be turning the wheel counterclockwise.
2) this is the same as my answer for 1), it is still counterclockwise.
3) It doesn't have to be towards the center for it to rotate clockwise
4) i don't think this will affect the rotation
5) ANS?