Lesson Worksheet: Mechanical Devices: Pulleys Science
In this worksheet, we will practice describing how pulleys work and why they are useful and identifying devices that use pulleys.
A pulley uses a downward force.
Fill in the blank. This makes it to lift heavy objects.
James and Elizabeth are talking about why using a pulley makes lifting an object easier. Who is right?
Which of these devices does not use a pulley?
Jacob is using a pulley to lift up a bucket containing bricks.
Which of these arrows shows the weight force of the bucket?
Fill in the blank: Jacob is using to help him lift the bucket.
- Aair resistance
- Bthe bucket’s weight force
- Cthe force of gravity
- Dwater resistance
Which image correctly shows the force Jackson is using to lift this box?
Yara is using a pulley to collect water from a well.
Fill in the blanks: The pulley the direction that Yara’s force acts in.
- Achanges, push
- Bchanges, pull
- Cdoes not change, push
- Ddoes not change, pull
Mason is using a pulley to lift a heavy box off the ground.
Fill in the blank: Mason is using a force to lift the box.
True or False: The downward force applied on the rope of the pulley gets help from the force of gravity.
James needs to lift a heavy box up. Which of the following tools should he use?
Examine the following list:
- Gravitational force
- Downward pull
Fill in the blank: All the list items are forces acting on a pulley except for the .
- Bdownward pull
- Cgravitational force