Pulleys

What is the mechanical advantage of the block and tackle used to lift the bale of cotton?

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How does a single fixed pulley, like the one seen here, help you do work?

• changes the direction of the force
• increases the amount of applied force
• decreases the amount of applied force
• allows you to pull the rope a shorter distance

What is the mechanical advantage of this pulley system?

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A flag pole is a pulley system. 

• TRUE
• FALSE

Which one is an example of a pulley system?

• An ax 
• A ramp 
• An elevator
• A See-Saw 

Tags

NGSS.MS-ETS1-1

The object to be moved using a machine. 

• Pulley
• Effort
• Fulcrum
• Load

Tags

NGSS.MS-ETS1-2

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

calculate MA from support cables

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calculate MA from support cables

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calculate MA from support cables

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