A block of mass "100gm" slides on a rough horizontal surface.If the speed of the block decreases from 10m/s to 5m/s ,the thermal energy developed in the process is

A block of mass 100g slides on a rought horizontal surface .If the speed of the block decreases from 10ms^(-1) to 5ms^(-1) , find the thermal energy developed in the process

A block is sliding on a rough horizontal surface. If the contact force on the block is sqrt2 times the frictional force, the coefficient of friction is

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 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 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 2.5 mg is kept on a rough horizontal surface. It is found tht the blocl does not slide if a horizontal force less than 15 N is applied to it. Also it is found that it takes 5 seconds to slide through the first 10 m if a horizontal force of 15 N is applied and te block is gently pushed to start the motin.Taking block is gently pushed to start the motion. Taking g=10 m/s^2 , calculate the coefficientof staticand kietic friction between the block and the surface.

A block of mass 5 kg is initially at rest on a rough horizontal surface. A force of 45 N acts over a distance of 2 m . The force of friction acting on the block is 25 N . The final kinetic energy of the block is

A block of mass sqrt(3)//10kg is placed on a rough horizontal surface as shown in the figure. A force of 1N is applied at one end of the block and the block remains stationary. The normal force exerted by the sruface on the block acts(g=10 m//s^(2) )

A block of mass 20 kg is placed on a rough horizontal surface. When a force of 80 N is applied at an angle of 30°with the horizontal, the block just begins to slide. What is the coefficient of static friction ? (g= 10m//s^2 )