Pulleys

Question 1

What is a pulley

Answer 1

It’s a wheel with a rope that’s goes around the wheel in its groove and the rope attaches to the obese the and force is applied to the end of the rope

Question 2

Fixed pulley

Answer 2

Obey moves
Pulley stays in same spot
Force is applied only to one end

Question 3

Single fixed pulley

Answer 3

Provides user with directions
Effort needed to lift is equal to load
Directional advantage

Question 4

Movable pulley

Answer 4

Moves along rope
Pulley and object moves together
Wheel supports the load
Reduces the force needed to move the object

Question 5

Since movable pulley

Answer 5

Requires half the effort to lift load because there is more than 1 rope arm

Question 6

System of pulleys

Answer 6

The more complex the pulley the effort needed to move the object decreases

Question 7

Double pulleys

Answer 7

Combination of single fixed and single movable and their properties

Question 8

What is directional advantage

Answer 8

Allows you to pull down to lift the load

Question 9

What is mechanical advantage

Answer 9

The advantage gained by using simple machines reduces the effort

Question 10

Why use pulleys

Answer 10

Makes lifting things easier
Enables us to use gravity to help us
(It is easier to pull down than to pull up to lift something)

Question 11

How is mechanical advantage calculated

Answer 11

MA = load \ effort