Simple Machines, Work, & Mechanical Advantage

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 (MA)?

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 do you calculate mechanical advantage for a lever?

Back

MA = Output Force / Input Force.

Front

If Joe lifts a 10,000 N car with a force of 1,000 N using a lever, what is the mechanical advantage?

Back

10 (MA = 10,000 N / 1,000 N).

Front

What is the work done when a force is applied but no movement occurs?

Back

0 Joules (No work is done if there is no displacement).

Front

How is work calculated?

Back

Work is calculated using the formula: Work = Force x Distance.

Front

If a book weighing 1.0 N is lifted 2 meters, how much work is done?

Back

2 Joules (Work = 1.0 N x 2 m).

Front

What is the formula for calculating mechanical advantage of an inclined plane?

Back

MA = Resistance Force / Effort Force.

Front

If the resistance force is 24 N and the effort force is 10 N, what is the mechanical advantage of the inclined plane?

Back

2.4 (MA = 24 N / 10 N).

Front

How much force is exerted if 50 joules of work is done to push a chair 5 meters?

Back

10 N (Force = Work / Distance = 50 J / 5 m).