Mechanical Advantage & Levers

Front

What is the rate at which work is done?

Back

Power

Front

What is a rigid bar that is free to pivot on a fixed point?

Back

Lever

Front

What is the formula for mechanical advantage (MA)?

Back

MA = Input Distance / Output Distance

Front

If a box of weight W is lifted by a force F using a lever, what is the mechanical advantage if MA = 3?

Back

3

Tags

NGSS.MS-PS2-1

Front

How much work is produced when 350 N is used to move a car 5 m? (Use W = Fd)

Back

1750 J

Front

What is the term for the ratio of useful work output to total work input in a machine?

Back

Mechanical efficiency

Front

What is the mechanical advantage of a lever if the input distance is 6 m and the output distance is 2 m?

Back

3

Front

What is the unit of power?

Back

Watt (W)

Front

What is the relationship between work, force, and distance?

Back

W = Fd

Front

What happens to mechanical efficiency when friction increases?

Back

It decreases.