Simple Machine Pulleys

In which situation will the pulley reduce the force needed to lift the load?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-4

The picture shows a 150 N load being lifted using a fixed pulley. Which force could lift the load?

• 50 N

• 75 N

• 175 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How much force would be needed to lift the 150 N weight? Remember, you need to divide the original force by the number of pulleys.

• 300 N

• 150 N

• 75 N

• 25 N

A fixed pulley does not reduce the force needed to lift an object. What, then, is the advantage of using a fixed pulley?

• A fixed pulley reduces the force.

• A fixed pulley changes the direction of the force.

• A fixed pulley does not have any advantages.

What are two types of pulleys?

• wings, fries

• load. weight

• fixed, movable

• effort, force

Pulleys make work:

• Easier

• Rigorous

Identify the type of pulley

• Fixed

• Moveable

• Block and Tackle or pulley system

Identify the type of pulley

• Pulley System

• Fixed

• Moveable

Tags

NGSS.MS-PS2-2

In a simple machine, what is the load?

• point where the lever arm pivots

• the force needed to move the load

• the mass lifted by a system

• the distance the load travels

Which of the following is an example of a pulley?

• flag pole

• see saw

• jump rope