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- A chain of length L is placed on a horizontal surface as shown in figure. At any instant x is the length of chain on rough surface and the remaining p
. A chain of length L is placed on a horizontal surface as shown in figure. At any instant x is the length of chain on rough surface and the remaining p
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
Best Answer
(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
fk = μk N increases.
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