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

The wheel and axle is a simple machine that helps reduce friction and allows for easier movement of objects. It consists of a larger wheel attached to a smaller axle.

Front

How does a pulley function?

Back

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

Front

What is an inclined plane and its advantages?

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 by spreading the effort over a longer distance.

Front

Define a screw and its applications.

Back

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

Front

What is a wedge and how is it used?

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 to its wide end.

Front

What is the role of the fulcrum in a lever system?

Back

The fulcrum is the pivot point around which a lever rotates. It is crucial for determining the mechanical advantage and efficiency of the lever.

Front

Explain the concept of mechanical advantage in simple machines.

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

How does friction affect the efficiency of simple machines?

Back

Friction is a force that opposes motion, and it can reduce the efficiency of simple machines by requiring more input force to achieve the same output.