Simple Machines and Work

Front

What is the force required to lift an object equal to?

Back

The weight of the object.

Front

What two things must you know to calculate work?

Back

Force and distance.

Front

True or False: Doing work faster requires more power.

Back

True.

Front

What does doing work on an object increase the transfer of?

Back

Energy.

Front

How is power determined?

Back

By dividing the work done by the amount of time needed to do the work.

Front

What is a simple machine?

Back

A device that makes work easier by allowing us to push or pull over increased distances.

Front

Name the six types of simple machines.

Back

Lever, Inclined Plane, Wedge, Screw, Pulley, and Wheel and Axle.

Front

What is a lever?

Back

A simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to help raise or lower objects.

Front

What is a pulley?

Back

A simple machine that uses a wheel and a rope to lift or lower objects.