Work, Power, Simple Machines

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and inclined planes.

Front

What type of simple machine is a screw?

Back

A screw is a type of simple machine that converts rotational motion into linear motion, often used to hold objects together or lift materials.

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 lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads.

Front

What is an inclined plane?

Back

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

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 is a wheel and axle?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle, allowing for easier movement of loads.

Front

What is a wedge?

Back

A wedge is a simple machine that is used to separate two objects or portions of an object, often used for cutting.

Front

How does using a crowbar demonstrate the use of a lever?

Back

Using a crowbar to lift a lid demonstrates a lever because the crowbar acts as the rigid bar, the lid is the load, and the point where the crowbar pivots is the fulcrum.