Answer to Question #268480 in Mechanics | Relativity for Ase

Question

A person weighing 80 kg applies a horizontal force to a box weighing 20 kg to set it in motion. The person is μ_s = 0.8 and the box is μ_k =0.4.

a) Assuming the person remains stationary, what is the maximum possible acceleration of the box?

b) Use the answer to the previous question to determine the force exerted by the case on the person.

Answer 1

a)

$a_{max}=1.2~\frac m{s^2},$

b)

$F=96~N.$