Design And Technology- Pulleys Flashcards Preview

Grade 9- July Exams > Design And Technology- Pulleys > Flashcards

Flashcards in Design And Technology- Pulleys Deck (11):
1

Pulley

A simple machine that uses grooved wheels and rope to raise, lower, or move a load.

2

Compound pulley

Two or more pulleys that creates mechanical advantage

3

Load

Weight of an object

4

Effort

The amount of force required to lift or move this object

5

As you add more pulleys

You increase your mechanical advantage and it becomes very easy to lift the same load.

6

Amount of pulleys in a compound pulley =

Mechanical advantage

7

Mechanical advantage =

Load/ effort

8

1 tone =

1000kg

9

Velocity ratio (speed)

Diameter of driven pulley/ diameter of driver pulley

10

Diameter of driven pulley

Velocity ratio x diameter of driver gear

11

Diameter of driver gear =

Diameter of driven gear/ velocity ratio

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