forces (equations and symbols) Flashcards by 8GLizzie Latham-Roberts

Q

weight (W)
EQUATION

A

weight =mass* gravity
W=mg

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Q

Hooke’s law (F)
EQUATION

A

force=spring constant*extension
F=ke

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Q

Work Done(Wd)
EQUATION

A

work done = force* distance
Wd=F*D

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Q

Gravitational store of energy(GDP)
EQUATION

A

gravitational store of energy=mass* gravity*height

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Q

Kinetic store of energy(Ek)
EQUATION

A

1/2mv^2

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Q

power(energy)
EQUATION

A

power=energy/time

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Q

elastic store of energy
EQUATION

A

EE=1/2ke^2

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Q

power(work done)
EQUATION

A

power=work done/time

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Q

efficiency(energy)
EQUATION

A

efficiency energy=(useful energy output/total energy input)*100

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Q

efficiency (power)
EQUATION

A

efficiency(power)=output power/input power

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Q

speed
EQUATION

A

speed=distance/time

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Q

acceleration
EQUATION

A

acceleration=change in velocity/time

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Q

m symbol for…

A

mass

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Q

g symbol for….

A

gravity

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Q

W symbol for…

A

weight

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Q

F symbol for….

A

force

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Q

d symbol for….

A

distance

Q

Wd symbol for…

A

work done

Q

k symbol for..

A

spring constant

Q

v symbol for…

A

velocity

Q

a symbol for…

A

acceleration

Q

t symbol for….

A

time

Q

s symbol for….

A

speed

Q

Ek symbol for..

A

kinetic store of energy

EE symbol for...

elastic store of energy

P symbol for...

power

E symbol for...

energy

force measured in?

N newtons

mass measured in?

kg

gravitational field strength measured in?

N/Kg

weight measured in?

N newtons

extension measured in?

metres

spring constant measured in?

N/m

distance measured in?

metres

Work done measured in?

J joules

velocity measured in?

m/s

acceleration measured in?

m/s^2

speed measured in?

m/s

time measured in?

seconds

energy measured in?

J joules

power measured in?

Watts