Question

A box is at rest on a smooth surface. Two friends are pushing it in opposite directions as shown. Choose the correct options.

• A. The net force is zero.
• B. The net force is 3 N in the right direction.
• C. The net force is 3 N in the left direction.
• D. The net force is 17 N in the left direction.

Answer 1

The correct option is C The net force is 3 N in the left direction.

Forces in the opposite directions are subtracted. So, the net force will be in the direction of the greater force.
Therefore,
Net force (F) = 10 - 7 = 3 N (towards left)