A block of mass `m` is given velocity `v_0` on a rough horizontal surface. After traveling a distance d. Its speed becomes `(v_0)//(2)`. Find the work done against friction. The work donw by friction and the coefficient of friction.

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 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 is placed on a rough horizontal surface. If minimum force to pull the block is (mg)/(2) then coefficient of friction is :

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 body of mass 2 kg is kept on a rough horizontal surface as shown in the figure. If coefficient of friction is 0.5, find the work done by frictional force in the interval t=0 to t=5 sec

A block of mass m is kept over another block of mass 2 m and the system rests on a smooth horizontal surface. The coefficient of friction between the blocks is 0.50. Find the work done by the force of friction on the smaller block by the bigger block during a displacement d of the system, when a force mg is applied to the lower block.

A ball is given a speed v on a rough horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

A ball is given a speed v on a rough horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

A block of mass m is kept over another block of mass 2m and the system rests on a smooth horizontal surface. The coefficient of friction between the block is 0. 50 . Find the work done by the force of friction on the smaller block by the bigger block during a displacement the of the system when a force mg is applied to the lower block