A crate slides down a 35o ramp with constant speed. What is the coefficient of kinetic friction between the crate and the ramp?

Explanation:

The formula for calculating the coefficient of kinetic friction between the crate and the ramp is expressed as;

η = F/R

F is the frictional force

R is the normal reaction

since F = mgsinθ (Force acting parallel to the ramp)

R = mgcosθ

Substitute into the formula

η = mgsinθ/mgcosθ

η = sinθ/cosθ

η = tanθ

Given

θ = 35°

η = tan35°

η = 0.7

Hence the coefficient of kinetic friction between the crate and the ramp is 0.7

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.