Question

A 50 kg crate rests on a level floor. Solve for the coefficient of static friction, if the static friction is 298.9 N.

Answer 1

We can find the coefficient of static friction from the formula:

$$F_{s.fr.}=\mu_sN=\mu_smg,$$ $$\mu_s=\dfrac{F_{s.fr.}}{mg}=\dfrac{298.9\ N}{50\ kg\cdot 9.8\ \dfrac{m}{s^2}}=0.61$$

Answer:

$\mu_s=0.61$