1.

A ball of mass 5 kg experiences a force F = 2x2 + x. Work done in displacing the ball by 2 m is

Answer» W =Integration between limit [0,2] (2x^2+x)dx

=[2x^3/3+x^2/2]with in limit [0.2)]

=2×2^3/3+2^2/2

=(16+6)/3

=22/3 J


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