Answer:
0.7
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
