polly is pushing a box to the right across the floor with a force of 30 n. the force of gravity is 8 n, and…

polly is pushing a box to the right across the floor with a force of 30 n. the force of gravity is 8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?\n←30 n\n←8 n\n→8 n\n→30 n

polly is pushing a box to the right across the floor with a force of 30 n. the force of gravity is 8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?\n←30 n\n←8 n\n→8 n\n→30 n

Answer

Explanation:

Step1: Analyze the state of the box

The box is not moving, so it is in equilibrium. In the horizontal - direction, the net force is zero.

Step2: Consider the horizontal forces

Polly applies a force of 30 N to the right. The frictional force opposes the applied force to keep the net force in the horizontal direction zero.

Answer:

A. $\leftarrow30\ N$