Author Question: A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the ... (Read 72 times)

jerry coleman · **on:** Jul 28, 2018

A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the crate begins to move downward. If the crate slides down the plane with an acceleration of 0.20 m/s2 when the incline angle is 18, what is the coefficient of kinetic friction between ramp and crate? (g = 9.8 m/s2)
a. 0.40
b. 0.50
c. 0.30
d. 0.20
e. 2.8

Question 2

A horizontal force of 675 N is needed to overcome the force of static friction between a level floor and a 300-kg crate. What is the acceleration of the crate if the 675-N force is maintained after the crate begins to move and the coefficient of kinetic friction is 0.15?
a. 0.78 m/s2
b. 3.7 m/s2
c. 3.3 m/s2
d. 1.5 m/s2
e. 1.8 m/s2