Mechanical Advantage & Levers

Front

What is Mechanical Advantage?

Back

The amount by which a machine multiplies input force.

Front

What is the formula for Mechanical Advantage (MA)?

Back

MA = Input Distance / Output Distance.

Front

What is the definition of Mechanical Efficiency?

Back

The percentage of the input work that is converted to output work.

Tags

NGSS.MS-PS3-5

Front

How do you calculate Work (W)?

Back

W = Force (F) x Distance (d).

Front

If a lever has a mechanical advantage of 3, what does that mean?

Back

It means the lever multiplies the input force by 3 times.

Front

What is the unit of force in the metric system?

Back

Newton (N).

Front

If a weight of 2000 N is lifted using a force of 500 N, what is the mechanical advantage?

Back

MA = 2000 N / 500 N = 4.

Front

What is the relationship between input force and output force in a lever?

Back

The input force is the force applied to the lever, while the output force is the force exerted by the lever.

Front

What does it mean if a machine is 100% efficient?

Back

It means all the input work is converted to output work without any losses.

Tags

NGSS.HS-PS3-3

Front

If you pull 4 meters of rope to lift a weight 1 meter, what is the mechanical advantage?

Back

MA = 4 m / 1 m = 4.