Equations Flashcards
Work done
Work done = force x distance
Work done triangle
W at the top f at the side and d at the other side
Weight
Weight = mass x gravitaional field strength
Weight triangle
W at the top m at the side and g at the other side
Gravitational potential energy
Gravitational potential energy = mass x gravitational field strength x height
Gravitational potential energy triangle
Ep at the top m at the side g in the middle and h on the other side
Kinetic energy
Kinetic energy = a half x mass x velocity squared
Force
Force = spring constant x extention
Force triangle
F at the top k at the side and e on the other side
Elastic potential energy
Elastic potential energy = a half x spring constant x extension squared
Elastic potential energy triangle
Ee at the top a half at the side and k in the middle and e squared at the side
Power
Power= energy transferred divided by time
Power = work done divided by time
Efficiency
Efficiency = total useful energy or power divided by total input energy or power
Change in thermal energy
Mass x specific heat capacity x temperature change
Thermal energy for a change of state
Mass x specific latent heat
