A smooth block is released at rest on a `45^@` incline and then slides a distance 'd'. The time taken to slide is 'n' times as much to slide on rough incline than on a smooth incline. The coefficient of friction is

A smooth block is released at rest on a 45^(@) inclined and then slides a distance d. the time taken to slide is n times as much to slide on rough incline then on a smooth incline of same inclination. The coefficient of friction fo rough incline.

A body weighing 20 kg just slides down a rough inclined plane that rises 5 in 12. The coefficient of friction is

A block is released from rest from point on a rough inclined place of inclination 37^(@). The coefficient of friction is 0.5.

A block takes a twice as much time to slide down a 45^(@) rough inclined plane as it takes to slide down a similar smooth , plane . The coefficient of friction is :

A block of mas m begins to slide down on an inclined plane of inclination theta . The force of friction will be