All about pulleys

What is the main purpose of a simple machine?

• To make work harder.

• To make work easier.

• To make things heavier.

• To make things lighter.

In the context of a pulley, what is the object being lifted called?

• The force.

• The effort.

• The load.

• The fulcrum.

What are the two main parts of a pulley?

• A lever and a ramp.

• A screw and a wedge.

• A string or rope and a wheel.

• A gear and a chain.

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How does a pulley help lift a heavy object?

• It makes the object lighter.

• It changes the direction of the force, making it easier to pull down to lift up.

• It adds more weight to the object.

• It uses a motor to do all the work.

Which of the following is an example of a pulley being used in everyday life?

• Opening a door.

• Riding a bicycle.

• Raising a flag on a flagpole.

• Using a screwdriver.