Question

A 24.0 kg box (m1) rests on a table.(b) A 13.0 kg box (m2) is placed on top of the 24.0 kg box, as shown in Fig. 4-35.
Determine the normal force that the table exerts on the 24.0 kg box.
Determine the normal force that the 24.0 kg box exerts on the 13.0 kg box.

Answer 1

if both boxes are stacked, the force on the table is (m1+m2)g
The lower box exerts a force equal to the weight of the upper box, otherwise, the top box would be falling through the lower.