A body is kept at rest on a horizontal plane. After giving it a short push, it travels for some distance and finally comes to rest. Which of the following forces is responsible for stopping the body?
A
Gravitational force
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B
Frictional force
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C
Magnetic force
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D
Muscular force
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Solution
The correct option is B
Frictional force
Friction is a type of contact force which opposes relative motion between two bodies. When a body is pushed along a surface, it gains some speed. Hence, there is relative motion between the body and surface. As frictional force is the only force acting after the force is withdrawn and acts opposite to its motion, it eventually brings it to a stop.