Question

Paul works for a supermarket and is pushing a wooden box of supplies across the supermarket floor. If the coefficient of kinetic friction between the crate and the floor is 0.2 and the kinetic friction between the floor and the crate is 18 N, what is the normal force acting on the crate? From the Library, select the general equation you can use to solve for FN with the given information.

A) FN = μk * Ff
B) FN = μk * mg
C) FN = μk / Ff
D) FN = μk / mg

Answer 1

The equation you can use to solve for the normal force is FN = μk * mg. Calculate the weight of the crate using the formula weight = mass * acceleration due to gravity. Substitute the values of μk and weight into the equation to find the normal force.

Step-by-step explanation:

The general equation that can be used to solve for the normal force (FN) in this scenario is FN = μk * mg, where μk is the coefficient of kinetic friction and m is the mass of the wooden box. In this case, the coefficient of kinetic friction is given as 0.2 and the kinetic friction is given as 18 N.

To solve for the normal force, we need to know the weight of the wooden box, which is equal to its mass multiplied by the acceleration due to gravity. Once we have the weight, we can use the equation FN = μk * mg to find the normal force.

First, we calculate the weight of the wooden box using the formula: weight = mass * acceleration due to gravity. Then, we substitute the values for μk and weight into the equation FN = μk * mg to obtain the normal force acting on the crate.