Choose the correct answer. Which simple machine is a rigid bar pivoted about a fixed point?

✅ B. Pascal

Pressure is measured in pascals. Read more

✅ B. Convex lens

A convex lens is thicker at the center and converges parallel light rays. Read more

✅ D. Ohm

Electrical resistance is measured in ohms. Read more

✅ A. Energy

The joule is the SI unit of energy and work. Read more

✅ D. Mass × velocity

Linear momentum is p = mv. Read more

✅ D. Lever

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

✅ C. Reflection

Reflection is the return of light from a surface. Read more

✅ C. Tesla

Magnetic flux density is measured in teslas. Read more