A block is placed on a plane whose angle of inclination is 30º.The coefficients of static and kinetic friction for the block on the inclined plane are both 0.2.The block
A)remains stationary on the inclined plane.
B)accelerates down the inclined plane.
C)travels down the inclined plane at constant velocity.
D)travels up the inclined plane at constant velocity.
E)accelerates up the inclined plane.

Question

Quizplus · Accepted Answer

The gravitational component down the plane (mg sin 30º) is greater than the maximum static friction (0.2 mg cos 30º), causing the block to accelerate down the plane.

A Block Is Placed on a Plane Whose Angle of Inclination