Which of the following is correct? Which simple machine is a rigid bar pivoted about a fixed point?

✅ A. Newton's third law

Newton's third law describes action and reaction forces. Read more

✅ B. It increases

For typical metals, electrical resistance increases as temperature rises. Read more

✅ B. ½mv²

Kinetic energy is one-half mass times velocity squared. Read more

✅ B. 9.8 m/s²

Near Earth's surface, gravitational acceleration is approximately 9.8 m/s². Read more

✅ C. Voltmeter

A voltmeter measures potential difference. Read more

✅ B. Lever

A lever is a rigid bar that rotates around a fulcrum. Read more

✅ A. Ammeter

An ammeter measures electric current. Read more

✅ A. Ammeter

An ammeter measures electric current. Read more