Newton's Laws of Motion · Friction
The time taken by a block of mass m to slide down from the highest point to the lowest point on a rough inclined plane is 50 % more compared to the time taken by the same block on identical inclined smooth plane. Both inclined planes are at with the horizontal. The coefficient of kinetic friction between the rough inclined surface and block is .
- (1)3/4
- (2)2/3
- (3)5/9
- (4)4/9
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