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Flashcards in Mechanics Deck (20):
1

Levers

Simple machine usually consisting of a long, rigid object that moves around a turning point when a force is applied

2

Load

Force, such as the weight of an object, resisting motion against which a lever works

3

Fulcrum

Point around which a lever turns

4

Effort

Forced used to cause movement

5

First-class lever

Lever with the fulcrum between the effort and the load

6

Force multipliers

Simple machine that supplies a greater force than the effort used. The effort must be applied over a greater distance than the load is moved

7

Second-class levers

Lever with the load between the effort and the fulcrum

8

Mechanical advantage

The advantage of force-multiplying levers or other machines as defined by load/effort

9

Third-class levers

Lever with the effort between the load and the fulcrum

10

Speed multipliers

Simple machine that increases the speed of an object. The effort applied must be greater than the load but applied over a shorter distance

11

weight

A measure of the size of the gravity force pulling an object towards the centre of a massive body, such as the Earth. The weight of an object depends on the object’s mass

12

screw

Curved inclined plane

13

inclined plane

Simple machine that uses sloping surfaces to reduce the effort required for a task

14

block and tackle

System of pulleys in which there are both fixed and moving pulleys

15

wheel and axle

Lever that can rotate. The effort applied to the outside of the wheel produces a greater force on the axle because the effort is moved over a longer distance

16

transfer

Move energy from one object to another using simple machines

17

transform

Change one form (of energy) into another

18

driven gear

Gear that is moved by another gear

19

driving gear

Gear that causes another to move

20

gear

Toothed wheel that can turn other toothed wheels