A force of 98N is just able to move a block of mass 20kg on a rough horizontal surface. Calculate the coefficient of friction and the angle of friction.

Force required to move a mass of 1 kg at rest on a horizonlal rough plane (coefficient of friction 0.1 and g=9.8 m//s^(2) ) is

A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2. What is the weight of the block (in N)?

A body of mass 2 kg is pulled with a velocity 2 m cdot s^(-1) on horizontal surface. What will be the heat produced in 5s, if the coefficient of friction between the body and the surface is 0.2? Given, J = 4.2 J cdot cal^(-1) , g = 9.8 m cdot s^(-2) .

A block of mass 0.1 kg is kept pressed onto a wall by applying a horizontal force of 5 N. If the coefficient of friction between the block and the wall is 0.5, find the force of friction on the block.