- #1

cavery4

- 9

- 0

http://www.webassign.net/CJ/p9-31.gif

What is the net torque produced by the two forces? (Assume counterclockwise is the positive direction.)

What is the angular acceleration of the disk?

For the first question, I thought maybe to do:

90.0 N * r + 125 * r = 89.01

That is wrong.

I know of the eqn.

torque = I * alpha

but I don't know how to use it in this problem.