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A 50 kg block rests on a rough horizonta...

A 50 kg block rests on a rough horizontal surface. A force of 200 N is applied on the body. The block acquires a speed of `4 m//s`, starting from rest in 2 seconds. The value of coefficient of friction is

A

0.38

B

0.4

C

0.47

D

0.39

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • A block of mass 10 kg kept on a rough horizontal surface can be maintained in uniform motion in a straight line when the force of 50 N is applied to the body in the direction of it’s motion. Find the coefficient of kinetic friction between the surfaces.；

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    B
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    D
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    A
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  • A body of mass 2 kg moving along north east direction with a speed of sqrt 2 m/s . A force of 0.2 N is applied on the body due west for 10 sec. The final velocity of the body is

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