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Question

An arrow fired from a bow attains a maximum height of 5 m from the level it is released. If the mass of the arrow is 500 g, work done by the bow on the arrow is greater than which of the following? Assume g=10m/s2


A

20J

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B

25J

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C

30J

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D

35J

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Solution

The correct options are
A

20J


B

25J


The work done by the bow on the arrow would be equal to the maximum gravitational potential energy stored in it, which would be equal to m×g×h.

Given, m =500 g =5001000 kg, h=5 m

Work done =m×g×h=5001000×10×5=25 J


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