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This was asked in the online test. Why is the d option incorrect?

Asked by Kim 17th October 2013, 6:46 PM
Answered by Expert
Answer:
Torque is given as ? = rF
 
Now, there are two equal and opposite forces acting on the spool.
 
Thus, the net torque is
 
? = rF + (-rF) = 0
Answered by Expert 17th October 2013, 7:18 PM
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