A box with mass M = 14.3 kg is placed on a rough surface with coefficient of kinetic friction of 0.245. The mass is attached to two balls m1 and m2 = 10.6 [kg] via two pieces of rope and the system starts sliding as shown. The rope slides around the pulley mechanism frictionlessly. Given that the first rope exerts a tension force of 112 [N] on both the box and m1, what is the mass of m1?
a. Draw the FBD of each object.
b. Apply Newton’s second law on each object.
c. Give the expression for m1 before substituting the numerical values.