Work, Power, and Machines

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.

Front

What is power in physics?

Back

Power is the rate at which work is done or energy is transferred. It is calculated as Power = Work / Time.

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to push or pull over increased distances. Examples include levers, pulleys, and inclined planes.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied. It indicates how much a machine multiplies force.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift objects with less effort.

Front

What is a wedge?

Back

A wedge is a simple machine that is used to split or cut objects apart. It is a type of inclined plane.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a wheel on an axle or shaft that is designed to support movement and change the direction of force.

Front

What happens to work done if the distance is zero?

Back

If the distance an object moves is zero, then the work done on the object is also zero.

Front

How do simple machines make work easier?

Back

Simple machines make work easier by allowing us to apply less force over a greater distance.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.