P5 Forces

Front 1

Vector

Back 1

Magnitude + direction

Front 2

Scalar

Back 2

Magnitude

Front 3

Vector representation (arrow)

Back 3

Magnitude - length

Direction - direction of arrow

Front 4

Force

Back 4

Push/pull on an object, that's caused by it interacting with something

Front 5

Contact forces

Back 5

2 objects touch for force to act

Front 6

Non-contact force

Back 6

2 objects don't need to touch for force to act

Front 7

Interaction pair

Back 7

Pair of forces equal + opposite, and act on 2 interacting objects

Front 8

Gravitational force

Back 8

Force of attraction between masses

Front 9

Importance of gravity on a planet

Back 9

1) all things fall towards the surface

2) gives everything a weight

Front 10

Mass

Back 10

Amount of 'stuff' in an object

Front 11

Weight

Back 11

Force acting on an object due to gravity

Front 12

Weight equation

Back 12

Weight(N) = mass(Kg) x gfs(N/Kg)

Front 13

Resultant force

Back 13

Overall force on a point/object

Front 14

Work done equation

Back 14

Work done(J) = force(N) x distance(m)

Front 15

Elastically deformed

Back 15

Goes back to original shape + length, after force is removed

Front 16

Inelastically deformed

Back 16

Doesn't go back to original shape + length, after shape has been removed

Front 17

Forces needed to elastically deform an object

Back 17

>1

Front 18

Energy when elastically deformed

Back 18

Elastic potential energy

Front 19

Force equation (spring)

Back 19

Force (N) = spring constant x extension (m)

Front 20

Limit of proportionality

Back 20

Limit of amount of force you can apply for extension to keep increasing proportionally

Front 21

Moment

Back 21

Turning effect of force

Front 22

Max moment angle (lever)

Back 22

90, other angles means decrease distance

Front 23

Gears (how)

Back 23

Teeth interlock, turning 1 causes another to turn I opposite direction

Front 24

Gears (use)

Back 24

Used to transmit rotational effect from 1 place to another

Front 25

Gears (sizes)

Back 25

Larger gear, larger moment. Because distance from pivot increases.

But slower

Front 26

Pressure of a fluid (direction)

Back 26

90

Front 27

Density of liquid increase

Back 27

- More particles in a certain space

- more particle collide

-so pressure increases

Front 28

Depth of liquid increase

Back 28

- No of particles above that point increases.

- weight of these particles adds pressure at that point

Front 29

Moment equation

Back 29

Moment(Nm) = force(N) x distance (m)

Front 30

Pressure equation

Back 30

Pressure (pa) = force(N) / area (m)

Front 31

Pressure equation (given)

Back 31

Pressure (pa) = height of column (m) x density of liquid (kg/m3) x gfs (N/Kg)