Question

A chain hangs over a smooth peg, 8 meters being on one side and 12 meters on the

other. Find the time required for it to slide off (a) neglecting friction and (b) if friction is

equal to the weight of 1 meter of chain.

Answer 1

(a) neglecting friction

Time taken$8×12=1 min 46sec$

(b) if friction is equal to the weight of 1 meter of chain

Time taken$={8×12\over 1}= 1min46sec$