A 317-kg crate rests on a surface that is inclined above the horizontal at an an
ID: 1691716 • Letter: A
Question
A 317-kg crate rests on a surface that is inclined above the horizontal at an angle of 22.9 °. A horizontal force (magnitude = 562 N and parallel to the ground, not the incline) is required to start the crate moving down the incline. What is the coefficient of static friction between the crate and the incline? A 317-kg crate rests on a surface that is inclined above the horizontal at an angle of 22.9 °. A horizontal force (magnitude = 562 N and parallel to the ground, not the incline) is required to start the crate moving down the incline. What is the coefficient of static friction between the crate and the incline?Explanation / Answer
The question doesn't indicate the direction of the horizontal force F (push the crate or pull it) if the above answer is wrong, then use F = -562 N in the final result u = f/N = (mgsinA - FcosA)/(mgcosA + FsinA) = 0.653