Practice: 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, and inclined planes.

Front

What are the six types of simple machines?

Back

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

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

What are the three classes of levers?

Back

The three classes of levers are: 1st Class Lever (fulcrum between effort and load), 2nd Class Lever (load between effort and fulcrum), 3rd Class Lever (effort between load and fulcrum).

Front

What is the mechanical advantage of a lever?

Back

The mechanical advantage of a lever is the ratio of the output force (load) to the input force (effort). It indicates how much a machine multiplies force.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help raise or lower objects with less effort.

Front

What is a pulley?

Back

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

Front

What is the unit of measurement for work?

Back

The unit of measurement for work is Joules.

Front

What is the formula for calculating work?

Back

The formula for calculating work is Work = Force x Distance.

Front

What is a wheel and axle?

Back

A wheel and axle is a simple machine consisting of a larger wheel attached to a smaller axle, allowing for easier movement of loads.