Simple Machines

Front

What are the six types of simple machines?

Back

The six types of simple machines are lever, wheel and axle, pulley, inclined plane, screw, and wedge.

Front

What is a lever and how does it work?

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 with less effort.

Front

What is the purpose of a wheel and axle?

Back

A wheel and axle is a simple machine that helps to reduce friction and make it easier to move heavy objects. The wheel turns around the axle, allowing for easier movement.

Front

How does a pulley function as a simple machine?

Back

A pulley consists of a wheel on an axle or shaft that is designed to support movement and change the direction of force. It is used to lift heavy objects with less effort.

Front

What is an inclined plane and what is its use?

Back

An inclined plane is a flat surface that is tilted at an angle to help raise or lower objects. It reduces the amount of force needed to lift an object.

Front

Define a screw and its function as a simple machine.

Back

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

Front

What is a wedge and how does it work?

Back

A wedge is a simple machine that consists of two inclined planes joined together. It is used to split, cut, or lift objects by applying force.

Front

What is mechanical advantage in the context of simple machines?

Back

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

Front

How does friction affect the efficiency of simple machines?

Back

Friction can reduce the efficiency of simple machines by converting some of the input energy into heat, which means less energy is available for useful work.

Front

What is the relationship between work and simple machines?

Back

Work is defined as the force applied to an object times the distance over which that force is applied. Simple machines help to make work easier by allowing us to apply force more effectively.