List of top Physics Questions on Friction asked in BITSAT

A brick of mass $2\, kg$ slides down an incline of height 5m and angle $30^{\circ}$. If the coefficient of friction of the incline is $\frac{1}{ 2 \sqrt{3}}$ , the velocity of the block at the bottom of the incline is (Assume the acceleration due to gravity is $10\, m/s^2$)

In figure, two blocks are separated by a uniform strut attached to each block with frictionless pins. Block $A$ weighs $400\, N$, block $B$ weighs $300\, N$, and the strut $A B$ weigh $200\, N$. If $\mu=0.25$ under $B$, determine the minimum coefficient of friction under $A$ to prevent motion.

A small block of mass $m$ is kept on a rough inclined surface of inclination $\theta$ fixed in a elevator. The elevator goes up with a uniform velocity $v$ and the block does not slide on the wedge. The work done by the force of friction on the block in time $t$ will be :

The minimum velocity (in $ms^{-1}$) with which a car driver must traverse a flat curve of radius $150\, m$ and coefficient of friction $0.6$ to avoid skidding is

Two blocks are connected over a massless pulley as shown in fig. The mass of block $A$ is $10\, kg$ and the coefficient of kinetic friction is $0.2$. Block A slides down the incline at constant speed. The mass of block $B$ in $kg$ is:

Starting from rest, the time taken by a body sliding down on a rough inclined plane at $45^{\circ}$ with the horizontal is, twice the time taken to travel on a smooth plane of same inclination and same distance. Then the coefficient of kinetic friction is