Simple Machines and Work

Front

What is the Mechanical Advantage (MA) of a pulley if you apply a force of 2 N to lift a 20 N object?

Back

10

Front

What are the units of force?

Back

Newtons

Front

If a wheel and axle has a Mechanical Advantage (MA) of 4 and you apply a force of 10 N, what is the heaviest object you can lift?

Back

40 N

Front

What are the units of work?

Back

Joules

Front

If an inclined plane has a Mechanical Advantage (MA) of 5, how much input force is needed to lift a 100 N car?

Back

20 N

Front

Define Mechanical Advantage (MA).

Back

The ratio of the output force exerted by a machine to the input force applied to it.

Front

What is a pulley?

Back

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 formula for calculating work?

Back

Work = Force x Distance.

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to the horizontal, used to help lift objects.

Front

What is the relationship between force and work?

Back

Work is done when a force causes an object to move; more force or distance results in more work.