A particle of mass `m` is given a velocity `u` on a rough horizontal surface of friction coefficient `mu`. The average power imparted by friction until it stops is

A block of mass 2 kg is given velocity 10 m//s on a rough horizontal surface of friction coefficent mu = 0.2 . Find the magnitude and the direction of friction force acting on it. After how much time and at what distance it will stop ?

A particle of mass m is thrown with speed u at an angle of projection theta with horizontal. The average power imparted by the gravitational force until it strikes the ground is

A small body of mass m is given velocity v_0 at point O on rough horizontal surface. (a) Find the mean power developed by the friction force during the whole time of motion if the friction coefficient is constant and equal to mu_0 (b) Find the maximum instantaneous power developed by the friction force, if the friction coefficient varies as mu=mu_0x , where mu_0 is a constant and x is the distance from the point O .

A block of mass m lying on a rough horizontal surface of friction coefficient mu is pulled by a force F as shown , the limiting friction between the block and surface will be

A body of mass m is kept on a rough horizontal surface of friction coefficient mu . A force P is applied horizontally , but the body is not moving .Find the net force F exerted by the surface on the body .

A small body of mass m moving with velocity v_(0) on rough horizontal surface, finally stops due to friction. Find, the mean power developed by the friction force during the motion of the body, if the frictional coefficient mu =0.27,m=1 kg and v_(0)=1.5 ms^(-1) .

A body of mass M is kept on a rough horizontal surface (friction coefficient = mu ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on the body is,

A block of mass m is at rest on a rough inclined plane, whose friction coefficient is mu. Net force exerted by surface on block is :-