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JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

A bucket full of water weighs 5 kg; it is pulled up from a well 20 m deep. There is a small hole in the bucket through which water leaks at a constant rate of 0.2 kg m⁻¹. The total work done in pulling the bucket up from the well is (g = 10 ms⁻²)

Answer: (A)

Solution

After being pulled up a distance x, the bucket's weight is (5 − 0.2x)×10 N. Total work

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Question ID VK-153549