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Homework Statement
Calculate the net torque about the axle of the wheel shown in the figure. Assume that a friction torque of 0.39 m·N opposes the motion.
http://www.webassign.net/gianpse3/10-52.gif
Homework Equations
The Attempt at a Solution
(0.2m)(20N)(sin135)=2.83
(0.1m)(35N)(sin 135)=2.47
(0.2m)(30N)(sin90)=6
-2.83m·N-2.47m·N+6m·N=0.7m·N
0.7m·N+.39m·N=1.09m·N
Is this how you deal with friction in a torque problem??