Pulley

What is the correct definition of a pulley?

• Pulley is a device that pulls things.

• A grooved wheel with rope wrapped around it.

• A rod attached inside the wheel which helps to move things.

The three types of pulley are:

• attached pulley, wheel pulley and complex pulley

• first class pulley, second class pulley and third class pulley

• fixed pulley, movable pulley and compound pulley

Pulley is useful for __________ the direction for force.

• speeding up

• dividing

• changing

Pulley can be helpful for us to:

• Split things apart.

• reduce the effort to lift or lower down heavy objects.

• time travel.

Which of the following uses the mechanism of pulley?

• see saw

• elevator

• axe

Curtains in a theatre are moved with the help of a pulley.

• true

• false

This image is an example of:

• Compound pulley

• Movable pulley

• Fixed pulley

The following is an example of:

• Fixed pulley

• Movable pulley

• Compound pulley

The following is an example of:

• Fixed pulley

• Movable pulley

• Compound pulley

What is this object called in a pulley system?

• Grooved wheel

• Rope wrapped around

• Hook