A block of mass `M` is being pulley along horizontal surface .The coefficient of friction the block and the surface is `mu` If another block of mass `M//2` is placed on the block and it is pulled is again pulled on the surface , the coefficient of friction the block and the surface will be

A block of mass M is using on a rough horizontal surface. mu_R is the coefficient of kinetic friction between the block and the surface. What is the net force exerted by the surface on the block?

A rectangular block of mass 5 kg is kept on a horizontal surface . The coefficient of friction between the block and the surface is 0.2 . If a force of 20 N is applied to the block at angle of 30^(@) with the horizontal plane , what is the force of friction on the block ? (Take g = 10 m//s^(2) )

A wedge B of mass 2 m is placed on a rough horizontal suface. The coefficient of friction between wedge and the horizontal surface is mu_(1) . A block of mass m is placed on wedge as shown in the figure. The coefficient of friction between block and wedge is mu_(2) . The block and wedge are released from rest. Q. Suppose the inclined surface of the wedge is at theta=37^(@) from angle from horizontal and mu_(2)=0 are wedge will remain in equilibrium if

A block of mass m is pulled by a constant powert P placed on a rough horizontal plane. The friction coefficient the block and surface is mu . The maximum velocity of the block is.

A block of mass 6 kg is being pulled by force 24 N as shown . If coefficient of friction between the block and the surface is 0.6 , frictional force acting on the block is :

A block of mass M is kept on as rough horizontal surface. The coefficient of static frictionbetween the block and the surface is mu . The block is to be pulled by applying a force to it. What minimum force is needed to slide the block? In which direction should this force act?

A block of mass m is placed on a rough horizontal surface. The coefficent of friction between them is mu . An external horizontal force is applied to the block and its magnitude is gradually increased. The force exerted by the block on the surface is R.

A block of mass 5 kg is pulled along a horizontal. The friction coefficient between the block and the surface is 0.5 . If the block travels at constant velocity, find the work done by this applied force during a displacement 4 m of the block.