If W1, W2 and W3 represent the work done in moving a particle from A to B along three different paths 1,2 and 3 (as shown in figure) in the gravitational field of the point mass m. Find the correct relation between ′W′1,′W′2 and ′W′3.
A
W1<W3<W2
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B
W1<W2<W3
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C
W1=W2=W3
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D
W1>W3>W2
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Solution
The correct option is BW1=W2=W3 Gravitational field is a conservative force field. Work done in a conservative field is path independent.
Hence since the start and end points are same in all three cases we can say W1=W2=W3