Laws of MotionHard
Question
A body of mass 2 kg is being dragged with uniform velocity of 2 m/s on a rough horizontal plane. The coefficient of friction between body and the surface is 0.2. The amount of heat generated in 5 second will be [J = 4.2J/cal and g = 9.8 m/s2]
Options
A.9.33 cal
B.8.33 cal
C.7.33 cal
D.6.33 cal
More Laws of Motion Questions
A body of mass 2 kg moving on a horizontal surface with an initial velocity of 4 m/s comes to rest after 2 sec. If one w...A body of mass 40 g is moving with a constant velocity 2 cm/s on a horizontal frictionless table. The force on the body ...Gravel is dropped into a conveyer belt at a rate of 0.5 kg/s. The extra force required in newton to keep the belt moving...A block is placed on a rough horizontal surface and a horizontal force F is applied to it as shown in figure. The force ...A fireman wants to slide down a rope. The rope can bear a tension of 3/4th of the weight of the man. With what minimum a...