Question

1. which simple machine is a bar that pivots around a fulcrum? *

5 points
○ lever
○ screw
○ wedge
○ pulley

Explanation:

A lever is defined as a bar that pivots around a fixed point called a fulcrum. A pulley consists of a wheel and rope, a screw is an inclined plane wrapped around a cylinder, and a wedge is a double - inclined plane. So the simple machine that is a bar pivoting around a fulcrum is a lever.

Answer:

A. Lever