The lengths of smooth and rough inclined planes of inclination 45^(deg) is same.Times of sliding of a body on two surfaces are t_(1),t_(2)and mu=0.75

The lengths of smooth & rough inclined planes of inclination 45^(@) is same Times of sliding of a body on two surface t_(1)t_(2) and mu =0.75 then t_(1):t_(2)= .

A body is kept on a smooth inclined plane having an inclination of 1 in x. Then,

A block of mass m takes time t to slide down on a smooth inclined plane of angle of inclination theta and height h. If same block slids down on a rough inclined plane of same angle of inclination and same height and takes time n times of initial value, then coefficient friction between block and inclined plane is

An object is placed on the surface of a smooth inclined plane of inclination . It takes time t to reach the bottom of the inclined plane. If the same object is allowed to slide down rough inclined plane of same inclination , it takes time nt to reach the bottom where n is a number greater than 1. The coefficient of friction  is given by -

A block released from rest from the top of a smooth inclined plane of inclination 45^(@) takes time 't' to reach the bottom . The same block released from rest , from top of a rough inclined plane of same inclination , takes time '2t' to reach the bottom , coefficient of friction is :

A body slides down on an inclined plane of inclination 37^(@) with horizontal. The distance travelled by the body in time t is given by s = t^(2) . Find the friction coefficient between the body and the incline.

A piece of ice slides down a rough inclined plane at 45^(@) inclination in twice the time that it takes to slide down an identical but frictionless inclined plane. What is the coefficient of friction between ice and incline ?