Mechanical Advantage Flashcard

Front

What is Mechanical Advantage?

Back

Mechanical Advantage (MA) is the ratio of the output force produced by a machine to the input force applied to it. It measures how much a machine multiplies force.

Front

How is Mechanical Advantage calculated for a wheel and axle?

Back

MA = radius of wheel / radius of axle.

Front

What is the formula for calculating Mechanical Advantage of an inclined plane?

Back

MA = length of incline / height of incline.

Front

If the input force is 50 N and the output force is 200 N, what is the Mechanical Advantage?

Back

MA = output force / input force = 200 N / 50 N = 4.

Front

How much work is done when lifting a 40 N bag of cat litter 2 meters?

Back

Work = force x distance = 40 N x 2 m = 80 J.

Front

What is the Mechanical Advantage of an inclined plane with a height of 5 meters and a length of 20 meters?

Back

MA = length / height = 20 m / 5 m = 4.

Front

What does a Mechanical Advantage greater than 1 indicate?

Back

It indicates that the machine multiplies the input force, making it easier to perform work.

Front

What does a Mechanical Advantage less than 1 indicate?

Back

It indicates that the machine does not multiply the input force, and more input force is needed to achieve the output.

Front

What is the relationship between work input and work output in a machine?

Back

In an ideal machine, work input equals work output, but in real machines, some energy is lost due to friction.

Front

What is the significance of a pulley system in terms of Mechanical Advantage?

Back

A pulley system can change the direction of force and can also provide a Mechanical Advantage, allowing a smaller input force to lift a larger load.