A block lying on a horizontal conv−
eyor belt moving at a constant
velocity receives a velocity 5m/s
at t=0 sec. relative to the ground
in the direction opposite to the dir−
ction of motion of the conveyor.
Aftert=4sec,the velocity of the
block becomes equal to the velocity
of the belt . the coefficient of
friction between the block and the
belt is 0.2 . then the velocity of the
conveyor belt is: (g=10m/s^2 )
(A) 13 m/s (B) −13m/s
(C)3m/s (D) 6m/s
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