An object of mass \( M \) is gently placed on a horizontal conveyor belt, which is moving with u....

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An object of mass \( M \) is gently placed on a horizontal conveyor belt, which is moving with uniform velocity \( v_{0} \) as shown in the figure. The coefficient of static friction is \( \mu_{s} \), the coefficient of kinetic friction is \( \mu_{k} \), and the acceleration of gravity is \( g \). Initially the object slips for a while but finally moves without slipping together with the belt.
P
Work done on the object by friction force relative to the reference frame moving with the conveyer belt is
(1) \( \frac{1}{2} M V_{0}^{2} \)
(2) \( -\frac{1}{2} M V_{0}^{2} \)
(3) \( M V_{0}^{2} \)
(4) Zero


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