# Physics Problem

The coefficients of static and kinetic frictions for plastic on wood are 0.50 and 0.40,

respectively. How much horizontal force would you need to apply to a 3.0 N plastic calculator to start it moving from rest?

https://brainmass.com/physics/applied-physics/physics-problem-static-and-kinetic-friction-455336

#### Solution Preview

Hi,

Since the object is at rest initially, we use the value of the coefficient of static friction

u = ...

#### Solution Summary

This posting contains the solution to the given problem.

$2.19