A block of mass 2kgfalls along a plane of inclination 60^@ . Coefficient of friction between the block andthe plane =sqrt(3/2). What force is to be applied on the block sothat it slides down (ii) moves up , without any acceleration ? If the velocity of the block in both cases is the same, find the ratio of the effective powers.

A block of mass 2kgfalls along a plane of inclination 60^@ . Coefficie

1.	A block of mass 2kgfalls along a plane of inclination 60^@ . Coefficient of friction between the block andthe plane =sqrt(3/2). What force is to be applied on the block sothat it slides down (ii) moves up , without any acceleration ? If the velocity of the block in both cases is the same, find the ratio of the effective powers.
Answer» ANSWER :4.97 N, 28.98 N; `(SQRT(2)-1)/(sqrt(2)+1)`