A 250-kg crate is placed on an adjustable inclined plane.If the crate slides down the incline with an acceleration of 0.70 m/s² when the incline angle is 25 $\degree$,then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s²) A)12 $\degree$ B)21 $\degree$ C)25 $\degree$ D)29 $\degree$

Question

Quizplus · Accepted Answer

For the crate to slide at constant speed, the net force must be zero, meaning the component of gravitational force down the incline equals the frictional force. At 25°, the crate accelerates, so the angle must be reduced. Solving for the angle where acceleration is zero gives approximately 21°.

A 250-Kg Crate Is Placed on an Adjustable Inclined Plane °\degree°

A 250-Kg Crate Is Placed on an Adjustable Inclined Plane $\degree$