Physics

Problem

A wooden box of unknown mass rests on a horizontal surface where the coefficient of kinetic friction is

\mu_k = 0.20

. When a horizontal pulling force of

50\,\text{N}

is applied, the box accelerates at

1.5\,\text{m}\!/\!\text{s}^2

. Calculate the mass of the box. Use

g = 9.8\,\text{m}\!/\!\text{s}^2