Work and Simple Machines

Flat, sloped surface.

• pulley

• inclined plane

• wheel and axle

• lever

Tags

NGSS.MS-PS2-2

Pivots around a fixed point,.

• wedge

• screw

• lever

• wheel and axle

Shaft attached to a wheel so that both rotate together.

• lever

• wheel and axle

• pulley

• wedge

Tags

NGSS.MS-PS2-1

Grooved wheel with a rope or cable wrapped around it.

• inclined plane

• wedge

• wheel and axle

• pulley

Ratio of output work to input work.

• efficiency

• work

• energy

What type of simple machine is this?

• wheel and axle

• gear

• lever

• inclined plane

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance

• reduce the amount of force needed to do work

• change the direction of the applied force

• all of the above

Which is an example of someone using a simple machine to do work?

• a boy runs across a football field

• a banker counts money

• a mother pushes a stroller up a ramp

• a girl eats a sandwich

Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?

• 1

• 10

• 100

• 1000

Made up of one or two inclined planes...

• lever

• wedge

• wheel and axle