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Merits and Demerits of Friction

94. A body of...

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94. A body of mass m is placed on rough surface having friction U inclined at theta angle. If mass is in limiting equilibrium then theta is

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Q. Read the following two statements and then identify the correct choice of the given answers.
A : The frictional force acting on a body of mass m which is at rest on a horizontal surface of coefficient of static friction

^{'} μ_{s}^{'}

μ_{s} m g

in the absence of external force.
B : The frictional force acting on a body of mass m which is at rest on a rough inclined surface of angle of inclination

θ

θ

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Q. A body of mass

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