Forces and Inertia :: Discussion


7.A body of mass 2kg is placed on a rough horizontal plane. The coefficient of friction between body and the plane is 0.2. Then ?
A.Body will move in forward direction if F=3N
B.Body will move in backward direction with acceleration of 0.5m/s2, if force F=3N
C.If F=3N, then body will be in rest condition
D.The body will move both in forward during a particular period and then remain at rest
Answer:  Option  D
Explanation:

Limiting friction, f = μR = μmg = 0.2×2×9.8=3.92N
When F>3.92N the body will move in a forward direction. When F=3N, the body will move to remain at rest.

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Published by:Michael Daani

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