Pulleys

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

A ladder is a pulley system

• False
• True

The ideal mechanical advantage of a block and tackle depends on the 

• input force
• output force
• number of pulleys
• numbers of strands or ropes. 

The fixed pulley has the mechanical advantage of _____________

• four
• three
• two 
• one

A simple machine that has a grooved wheel that holds a rope or a cable. 

• inclined plane
• screw
• pulley

Block and tackle pulley is a ____________  of a fixed pulley and a movable pulley. 

• unit
• ideal 
• combination

Which of the following is NOT an example of a movable pulley? 

• Construction Crane
• Clothesline
• Weightlifting Machines
• Modern Elevators 

When using a pulley if you want to use half the amount of effort force, you will need to 

• Move the cable 4 times as far
• Move the cable 6 times as far
• Move the cable 10 times as far
• Move the cable 2 times as far