A 50-kg block rests on a horizontal surface. The coefficient of static friction $\mu$_s = 0.50. The coefficient of kinetic friction $\mu$_k = 0.35. A force of 250 N is applied as shown. Which of the following statemen best describes the subsequent motion? A) The block remains at rest. B) The block moves and continues to move at constant velocity. C) The block accelerates to the right. D) The block does not move until is increased to greater than 490 N. E) No conclusions can be drawn concerning the movement of the block from the information given.

Question

Quizplus · Accepted Answer

The force applied is greater than the force of static friction, so the block will begin to move. The coefficient of kinetic friction is less than the coefficient of static friction, so the force required to maintain a constant velocity is less than the force required to start moving the block. Therefore, the block will accelerate to the right.

A 50-Kg Block Rests on a Horizontal Surface μ\muμ s = 0

A 50-Kg Block Rests on a Horizontal Surface $\mu$ _s = 0