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State and prove the Work energy theorem |
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Answer» Work done by all force equal to Change KE According to Work - Energy theorem, work done by a net force in displacing a body is equal to change in kinetic energy of the body.s here is the displacement.Work done is given byv2 – u2 = 2as=> as = ½ (v2 – u2 )F = maW = Fs=> W = mas=> W = ½m (v2 – u2 )Work done increases the KE of the bodyKE = W=> KE = ½m (v2 – u2 ) |
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