Flashcards in Equation cards Deck (43)

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1

## Vectors - Resolving a force into its horizontal component?

### Fx=Fcosθ

2

## Vectors - Resolving a force into its vertical component?

### Fy=Fsinθ

3

## Suvat equation beginning with v?

### v = u + at

4

## Suvat equation beginning with s, and using v?

### s = 1/2 ( u + v ) t

5

## Suvat equation beginning with s, using a?

### s = ut + 1/2 at^2

6

## Suvat equation beginning with v^2?

### v^2 = u^2 = 2as

7

## Extra suvat equation, without u in it?

### s = vt - 1/2 at^2

8

## Rules for using suvat?

### Constant acceleration, moving in a straight line

9

## What do the symbols stand for in suvat?

###
s=displacement

u=initial velocity

v=final velocity

a=acceleration

t=time taken for the change in velocity

10

## Equation for force?

### force = mass x acceleration

11

## Equation for weight?

### weight = mass x gravity

12

## Force equation using momentum?

### force = change in momentum/change in time

13

## Momentum equation?

### momentum = mass x velocity

14

## Power/energy efficiency equation?

### useful output energy/total input energy ( x 100% )

15

## What is the moment of a force?

### moment = force x perpendicular distance of the line of action of force from the axis or point of rotation

16

## What is the torque of a force?

### torque = one of the forces x perpendicular separation between the forces

17

## Density equation?

### density = mass/volume

18

## Pressure equation?

### pressure = force/area

19

## Pressure in liquids equation?

### pressure = height of the liquid column x density of the liquid x gravity

20

## Work done equation?

### work done = force x distance moved in direction of the force

21

## Work done equation using an angle?

### work done = F x cos θ

22

## Power equation?

### Power = work done/ time taken

23

## Power equation using speed?

### Power = force x speed

24

## Restoring force exerted by the spring on that end?

### Force = the spring constant x the displacement of the springs end from its equilibrium position

25

## Energy for springs using force?

### Energy = 0.5 x force applied x the extension

26

## Energy for springs using the spring constant?

### Energy = 0.5 x spring constant x extension^2

27

## Stress equation?

### Force load/area

28

## Strain?

### extension/length

29

## Young modulus?

### stress/strain

30