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 inclined planes.

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 the formula for mechanical advantage in a simple machine?

Back

MA = Load ÷ Effort.

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 are the three classes of levers?

Back

The three classes of levers are: 1st class (fulcrum between input and output), 2nd class (output between fulcrum and input), and 3rd class (input between fulcrum and output).

Front

What is a pulley?

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.

Front

How does the number of pulleys affect mechanical advantage?

Back

More pulleys increase mechanical advantage, allowing a smaller input force to lift a larger load.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface tilted at an angle to help lift objects by spreading the effort over a longer distance.

Front

What is the formula for calculating work?

Back

Work = Force × Distance.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J), which is equal to one Newton meter.