(a) A block slides down an incline of angle `45^(@)` with an acceleration `(g)/(2 sqrt(2))`. Find the friction coefficient.
(b) A block slides down at `45^(@)` inclined plane in twice the time it takes to slide down a smooth `45^(@)` incline. What is friction co-efficient between the block and the incline?
( c) A block slides down on a rough inclined plane of inclination `30^(@)` with constant velocity. If this block is projected up the plane with a velocity of `10 m//s`, then at what distance along the inclined plane , the block will come to rest?
(d) A body is launched up on a rough inclined plane of inclination `theta`. If time of ascent is half of time of descent, find the friction coefficient.