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The graph between potential energy U and displacement X in the state of stable equilibrium will be-
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Important Questions on Work, Energy and Power
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A particle moves in a potential region given by U = 8x2 – 4x + 400 J. Its state of equilibriumwill be-
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For the path PQR in a conservative force field the amounts work done in carrying a body from P to Q and from Q to R are 5 Joule and 2 Joule respectively. The work done in carrying the body from P to R will be
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The mass of a bucket full of water is 15 kg. It is being pulled up from a 15m deep well. Due to a hole in the bucket 6 kg water flows out of the bucket. The work done in drawing the bucket out of the well will be (g = 10m/s2) :
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A uniform chain of length L and mass M is lying on a smooth table and of its length is hanging down over the edge of the table. If g is the acceleration due to gravity, the work done to pull the hanging part on the table is :-
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A particle is moved from (0, 0) t o (a, a) under a force from two paths. Path 1 is OP and path 2 is OQP. Let W1 and W2 be the work done by this force in these two paths. Then :
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A spring of force constant has an extension of . The work done in extending it from to is,
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If a spring extends by x on loading then energy stored by the spring is :- (T is tension in the spring, K = spring const.)
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A body of mass falls from a height of . What is the loss in potential energy?
