Single Choice

Rolling friction always greater than static friction.

ATRUE
BFALSE
Correct Answer
CAmbiguous
DData insufficient

Solution

Frictional force acting on the body $$f = \mu mg$$
Thus $$f \propto \mu$$
We know that $$\mu_r < \mu_s$$
where $$\mu_r$$ and $$\mu_s$$ are the coefficient of rolling friction and static friction, respectively.
$$\implies$$ $$f_r

SIMILAR QUESTIONS

Friction

In general, the relation between limiting friction ______ kinetic friction ______ rolling friction.

Friction

The upper half of an inclined plane with inclination $$\phi$$ is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

Friction

In general, the relation between limiting friction ______ kinetic friction ______ rolling friction.

Friction

A block of mass $$5$$ kg is lying on a rough horizontal surface. The coefficient of static and kinetic friction are $$0.3$$ and $$0.1$$ and $$g=10ms^{-2}$$. The frictional force on the block is?

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