A wooden block of mass 10 kg is at rest initially as shown in the figure. A linearly time varying force is applied. The static and kinematic coefficients of friction are 0.6 and 0.4, respectively. The velocity of the block at t = 4s in m/s will be (take g = 10 m/s2):

A wooden block of mass 10 kg is at rest initially as shown in the figu

1.	A wooden block of mass 10 kg is at rest initially as shown in the figure. A linearly time varying force is applied. The static and kinematic coefficients of friction are 0.6 and 0.4, respectively. The velocity of the block at t = 4s in m/s will be (take g = 10 m/s2):
A.	5
B.	0
C.	6.4
D.	7.5
Answer» D. 7.5

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A wooden block of mass 10 kg is at rest initially as shown in the figure. A linearly time varying force is applied. The static and kinematic coefficients of friction are 0.6 and 0.4, respectively. The velocity of the block at t = 4s in m/s will be (take g = 10 m/s2):

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