Equations Flashcards
What is the equation for Weight
Weight = Mass x Gravitational Field Strength
What is the equation for Work Done
Work Done = Force x Distance along the line of action of the force
What is the equation for Force applied to a spring
Force = Spring constant x extension
What is the equation for Moment of a force
Moment of a Force = Force x Perpendicular Distance from the line of action
What is the equation for pressure
pressure = Force on the surface / area of the surface
What is the equation for distance travelled
Distance travelled = Speed x Time
What is the equation for acceleration
Acceleration = Change in Velocity / Time
What is the equation for resultant force
Resultant force = mass x acceleration
What is the equation for momentum
Momentum = mass x velocity
What is the equation for kinetic energy
0.5 x mass x (speed) squared
What is the equation for gravitational potential energy
mass x gravitational field strength (g) x height
What is the equation for power
Power = energy transferred / time Power = work done / time Power = potential difference x current Power = current 2 x resistance
What are the two equations for efficiency
= Useful output energy transfer / total input energy transfer
= Total power output / Total power input
= useful power output x total power output
What is the equation for wave speed
= Frequency x wavelength
What is the equation for energy tranferred
= power x time
= charge flow x potential difference
