A block of mass 10 kg is moving along x -axis under the action of force F = 5 x N . The work done by the force in moving the block from x = 2 m to 4 m will be _______ J .

Question

A block of mass 10 kg is moving along x -axis under the action of force F = 5 x N . The work done by the force in moving the block from x = 2 m to 4 m will be _______ J .,

MARKS App · Accepted Answer

Work done is W = ∫ F d x It is given that F = 5 x N So, work done is W = ∫ 2 4 5 x d x = 5 x 2 2 2 4 ⇒ W = 5 ( 16 - 4 ) 2 = 30 J

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