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, inclined planes, screws, wedges, and wheels.

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 friction and how does it affect machines?

Back

Friction is the resistance that one surface or object encounters when moving over another. It causes energy loss in machines, making their efficiency less than 100%.

Front

What is the function of a pulley?

Back

A pulley is a simple machine that uses a wheel and a rope to lift or lower loads. It can change the direction of the force applied.

Front

How does an inclined plane help in lifting objects?

Back

An inclined plane allows a heavy object to be moved upward with less force by increasing the distance over which the force is applied.

Front

What is a lever?

Back

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

Front

What is the purpose of a screw?

Back

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

Front

What is a wedge?

Back

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

Front

What is the role of gravity in simple machines?

Back

Gravity is a force that pulls objects toward the Earth. In simple machines, it affects the amount of force needed to lift or move objects.

Front

How does a wheel and axle function as a simple machine?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle. It reduces friction and makes it easier to move or lift loads.