A chain (mass M ) is hanging from a wooden structure as shown in the figure A . It is slowly taken to a state as shown in the figure B . Calculate the work done by gravity in the process (assume that after reaching the ground, the chain does not form a heap)

Question

A chain (mass M ) is hanging from a wooden structure as shown in the figure A . It is slowly taken to a state as shown in the figure B . Calculate the work done by gravity in the process (assume that after reaching the ground, the chain does not form a heap), Mg 4 a + π b 4 a 2 + b 2 + a b π, Mg b 4 a + π b b - a π, 2 Mg 2 a + π b 4 a 2 - b 2 + ab π, Mg b 4 a + π b b + a π

MARKS App · Accepted Answer

Work done by gravity = – (Change in P.E.) ⇒ u i = u linear + u curved = Mass per unit length = M a + π b 4 W gravity = u i - u f = Mgb 4 a + π b b + a π

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