Embibe Experts Solutions for Chapter: Friction, Exercise 1: Exercise-1

Someone is using a scissors to cut a wire of circular cross section and negligible weight. The wire slides in the direction away from the hinge until the angle between the scissors blades becomes $2\alpha$. Find the friction coefficient between the blades and the wire.

A block of mass $0.1 kg$ is held against a wall by applying a horizontal force of $5N$ on the block. If the coefficient of friction between the block and wall is $0.5$, the magnitude of frictional force is

In the arrangement shown in figure, coefficient of friction between the two blocks is $\mu =\frac{1}{2}$. The force of friction acting between the two blocks is

If you want to pile up sand onto a circular area of radius $R$. The greatest height of the sand pile that can be erected without spilling the sand onto the surrounding area, if $\mu$ is the coefficient of friction between sand particle is:-

A particle is moving on rough horizontal ground with an initial velocity $v_0$. If ${\frac{3}{4}}^{\mathrm{t}\mathrm{h}}$ of its kinetic energy is lost due to friction in time $t_0$, then the coefficient of friction between the particle and the ground is