Question

tired worker pushes with a horizontal force of 357 N on a 142 kg crate initially resting on a thick pile carpet. The coefficients of static and kinetic friction are 0.60 and 0.40, respectively. Find the magnitude of the frictional force exerted by the surface.

Answer 1

Frictional force will be equal to 257 N

Step-by-step explanation:

We have given mass m = 142 kg

Static frictional coefficient
`\mu _s=0.6` and kinetic coefficient friction
`\mu _k=0.4`

Force applied F = 357 N

Static friction force is given by

`f=\mu _smg=0.6* 142* 9.8=834.96N`

As static friction is greater than the force applied

So body will not move

And friction force will be equal to 257 N