A) The magnitude of P should increase with time
B) The magnitude of P should decrease with time
C) The magnitude of P should increase first and then decrease with time
D) The magnitude of P should decrease first and then increase with time
Correct Answer: A
Solution :
[A] For chain to move with constant speed P needs to be equal to frictional force on the chain. As the length of chain on the rough surface increases. Hence the friction force \[{{f}_{k}}={{\mu }_{k}}N\] increases.You need to login to perform this action.
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