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If W 1 , W 2 and W 3 represent the work done in moving a particle from A to B along three different paths 1, 2, 3 respectively (as shown) in the gravitational field of a point mass m, find the correct relation between W 1 , W 2 and W 3

1. W 1 > W 2 > W 3
2. W 1 = W 2 = W 3
3. W 1 < W 2 < W 3
4. W 2 > W 1 > W 3

Correct answer: W 1 = W 2 = W 3

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