Machines (Energy + Work)

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 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 a wedge?

Back

A wedge is a simple machine that is used to separate two objects or portions of an object. It consists of two inclined planes joined back to back.

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 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 objects.

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 mechanical advantage?

Back

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

Front

How does a wedge reduce friction?

Back

A wedge reduces friction by converting a force applied to it into two forces that push outward, allowing for easier separation of materials.

Front

What is the purpose of a screw as a simple machine?

Back

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

Front

What is the function of a fulcrum in a lever?

Back

The fulcrum is the pivot point around which a lever rotates, allowing the lever to lift or move loads.