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(i) Two bodies of masses m(1)(m(2) gt m(...

(i) Two bodies of masses `m_(1)(m_(2) gt m_(1))` are connected by a light inextensible string which passes through a smooth fixed pulley. What is the instantaneous power delivered by an external agent to pull `m_(1)` with constant velocity `vec(V)`?

(ii) A small body of mass m is located on a horizontal plane at any point O. The body acquires a horizontal velocity `v_(0)` . Find the mean power developed by the friction force during the motion, if the coefficient of friction `mu=0.27, m=1.0` kg and `v_(0)=1.5m//s`.

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Two bodies of masses m_(1) and m_(2) (m_(2) gt m_(1)) are connected by a light inextensible string which passes through a smooth fixed pulley. The instantaneous power delivered by an external agent to pull m_(1) with constant velocity v is :

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Two masses m_(1) and m_(2) are connected by light inextensible string passing over a smooth pulley P . If the pulley moves vertically upwards with an acceleration equal to g then .