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 the body and the surface is 0.20. The amount of heat generated in 5 sec is
. `(4.2"joule"//cal and g=9.8 m//s^(2))`

A body of mass 2 kg is placed on rough horizontal plane. The coefficient of friction between body and plane is 0.2 Then,

A body of mass m, having momentum p, is moving on a rough horizontal surface. If it is stopped in a distance x, the coefficient of friction between the body and the surface is given by

A block of mass 10 kg is sliding on a surface inclined at 30^(@) with horizontal . If coefficient of friction between the block and the surface is 0.5 , find acceleration produced in the block . Take g = 9.8 m //^(2) .

A block of mass 50 kg slides over a horizontal distance of 1m. If the coefficient of friction between their surface is 0.2, then work done against friction is (take g = 9.8 m//s^(2) ) :

A small body is projected with a velocity of 20.5 ms^(-1) along rough horizontal surface. The coefficient of friction (mu) between the body and surface changes with time t (in s) as the the body moves along the surface. Find the velocity at the end of 4s in m/s

A block is projected with speed 20 m/s on a rough horizontal surface. The coefficient of friction (mu) between the surface varies with time (t) as shown in figure. The speed of body at the end of 4 second will be (g=10m//s^(2))

A body slipping on a rough horizontal plane moves wioth a deceleationof 4.0 m/s^ . What is cofficient of kineic friction between the block and the plane?

A body is kept on a horizontal disc of radius 2 m at a distance of 1 m from the centre . The coefficient of friction between the body and the surface of disc is 0.4. The speed of rotation of the disc at which the body starts slipping is (g=10 m//s^2 )

The coefficient of friction between a body and the surface of an inclined plane at 45^(@) is 0.5. if g=9.8m//s^(2) , the acceleration of the body downwards I m//s^(2) is

A cylinder of 10 kg is sliding in a plane with an initial velocity of 10 m / s . If the coefficient of friction between the surface and cylinder is 0.5 then before stopping, it will cover. (g=10m//s^(2))