Simple Machines and Mechanical Advantage Flashcard

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 screws.

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 measures how much a machine multiplies force.

Front

What is the advantage of using a pulley system?

Back

It changes the direction of the force needed to lift a load.

Front

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

Back

To amplify force.

Front

What is a first-class lever?

Back

A first-class lever is a type of lever where the fulcrum is located between the input force and the output force.

Front

What is the formula for calculating work?

Back

Work = Force × Distance.

Front

What is an ideal machine?

Back

An ideal machine is a theoretical machine that has 100% efficiency, meaning it does not lose energy to friction or other factors.

Front

What is the role of friction in machines?

Back

Friction is a force that opposes motion, causing energy loss in machines and reducing their efficiency.

Front

What is a second-class lever?

Back

A second-class lever is a type of lever where the output force is between the input force and the fulcrum.

Front

What is a third-class lever?

Back

A third-class lever is a type of lever where the input force is between the output force and the fulcrum.