A through inclined is placed on car moving with a constantvelocity u on horizontal ground . A block of mass M rests on the inclinedplane . Is any work done by force of friction then a dissipation of energy ?

A through inclined is placed on car moving with a constantvelocity u o

1.	A through inclined is placed on car moving with a constantvelocity u on horizontal ground . A block of mass M rests on the inclinedplane . Is any work done by force of friction then a dissipation of energy ?
Answer» Solution :Yes , the friction , `f =Mg sin THETA "" ( :. "M is at REST")` Since , BLOCK is not in motion so , no WORK is DONE by the friction no dissipation of energy takes place.