Unit 9 Review

Front

What is Mechanical Advantage (MA)?

Back

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

Front

How do you calculate Mechanical Advantage?

Back

MA = Output Force / Input Force

Front

If a lever allows you to lift a 10,000 N car with a force of 1,000 N, what is the mechanical advantage?

Back

10

Front

What is the formula for Work (W)?

Back

W = Fd, where W is work, F is force, and d is distance.

Front

How much work is done when a force of 350 N moves an object 5 m?

Back

1750 J

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

Is holding a baby considered work?

Back

Not work, because there is no movement in the direction of the force applied.

Front

What is effort (input) force?

Back

The force one exerts on a machine to perform work.

Front

What is output force?

Back

The force exerted by a machine on an object.

Front

What is the difference between work and not work in physics?

Back

Work involves movement in the direction of the applied force, while not work involves no movement or movement not in the direction of the force.