Simple Machines

Name this simple machine.

• Lever
• Wedge
• Pulley
• Inclined Plane

A seesaw is an example of a

• wedge

• lever

• inclined plane

• pulley

Determine the Force needed

• 160 N

• 320 N

• 40 N

• 80 N

Tags

NGSS.MS-PS2-2

In order to exert the least amount of force, where should the fulcrum be placed?

• position D

• position C

• position B

• position A

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

A boy uses this simple machine to lift a load. How does this machine help the boy to do work?

• by changing the direction

• by reducing total work

• by decreasing distance

• by reducing effort force

A load of 650 newtons is lifted with this pulley. What is the effort required to do this work?

• 300

• 325

• 600

• 650

Tags

NGSS.MS-PS2-4

Simple machines can make work easier by reducing the input force needed to move an object. However, there is a trade off for decreased input. What is the trade off?

• The distance the object is moved is increased.

• The distance the object is moved is decreased.

• The amount of work is increased.

• The amount of work is decreased.

Tags

NGSS.MS-PS2-2

In the picture apply the principle....

• Lever

• Pulley

• Wheel and Axle

• Inclined Plane

A painter lifts a can of paint that weighs 48 Newtons a distance of 3 meters. How would you calculate how much work he does? (work = distance x force)

• 3m ÷ 48N
• 48N ÷ 3m
• 48N × 3m
• none of the above

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.

• The boy in red will win.

• They will not move at all.

• Both will fall down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2