PULLEY

What is a pulley?

• A type of lever

• A simple machine used to lift heavy objects

• A type of screw

• A tool for measuring weight

How does a pulley help with lifting heavy objects?

• By reducing the weight of the object
  

• By increasing the force needed

• By changing the direction of the force needed

• By decreasing friction

What is the purpose of a movable pulley?

• To keep the pulley stationary

• To double the force needed to lift an object

• To change the direction of the force

• To increase the mechanical advantage

Which type of pulley has an axle that can move?

• Fixed pulley

• Movable pulley

• Compound pulley

• Static pulley

What is the mechanical advantage of a fixed pulley?

• 1

• 2

• 0.5

• 3

What is the mechanical advantage of a movable pulley?

• 1

• 2

• 0.5

• 3

Which type of pulley is a combination of both fixed and movable pulleys?

• Compound pulley

• Static pulley

• Single pulley

• Double pulley

What is a block and tackle system?

• A system of gears

• A type of lever

• A compound pulley with multiple pulleys on each axle

• A type of inclined plane

What part of the pulley system moves when force is applied?

• Wheel

• Axle

• Rope, cable, belt, or chain

• Drive element

Where are pulleys commonly used?

• In space

• Underwater

• On construction sites

• In deserts