Pullys

Question 1

What is a pully? (1)

Answer 1

One or more wheels with a rope looped over it, with a load at one end and effort at the other.

Question 2

What does a pully improve/ make easier? (1)

Answer 2

Lifting a load.

Question 3

Name 4 things about a 1 wheel pully (4)

Answer 3

• It lifts to the opposite direction.
• Must apply force equivalent to force creating.
• Have to pull 1 meter to lift 1 meter.
• It doesn’t alter the force.

Question 4

Name 2 things about a 2 wheel pully (2)

Answer 4

• You apply halve the force of what you creat.
• Pull 2 meter to lift 1 meter.
• Because it needs more rope.

Question 5

Tell me something about a 4 wheel pully (1)

Answer 5

• Apply a quarter of force

- Pull 4 meters to lift 1 meter.

Question 6

How is a pully like a lever (2)

Answer 6

• They increase force
• Bigger force by larger distance
• Give example

Question 7

Name 3 types of pullys and give an example of each. (6)

Answer 7

Fixed pully - rope over tree
Movable pully - Crain
Compound pully - bike gears