A block is placed on a ramp. Friction exists between the block and the ramp. Ini

Question

A block is placed on a ramp. Friction exists between the block and the ramp. Initially the block remains motionless, but, if you raise the ramp high enough, it starts to slide. Once the block starts to slide, you leave the ramp at that angle. What motion will the block now experience? Assume that the characteristics of the ramp surface remain the same all the way down the ramp. block on ramp Select one:

a) The block will slide down the ramp at a constant velocity.

b) The block will actually start to slide up the ramp, against gravity.

c) none of these

d) The block will slow down and stop before it reaches the bottom.

e) The block will accelerate in the positive direction and continue to move faster and faster as it slides down the ramp.

Explanation / Answer

Answer E

As soon as block starts sliding at a certain angle of incline, motion started and kinetic friction is applicable. Now since kinetic friction is less than static friction, there will be net downward force down the slope, hence it will accelerate down the slope

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