PLTW Pulleys

a movable pulley

• has  more force required than the load 
• is a block and tackle
• can move freely up and down
• consists only of rope

Tags

NGSS.MS-ETS1-1

What does a pulley system do?

• Forces two objects to split
• Changes an objects speed
• Changes an objects velocity
• Changes the direction of the pull used to lift the load

A flag pole is a pulley system. 

• TRUE
• FALSE

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which one is an example of a pulley system?

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

A ladder is a pulley system

• False
• True

The object to be moved using a machine. 

• Pulley
• Effort
• Fulcrum
• Load

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Unit of force.

• Meter
• Centimeter
• Newton

How much effort is required to lift an object weighing 360 N using a fixed pulley?

• 360 N
• 120 N
• 200 N
• 250 N

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

Which of the following is an example of a fixed pulley? 

• Elevator
• Construction Crane
• Flagpole