P1.4 Gravitational Potential Energy Stores
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What does the amount of work done when an object moves up or down depend on?
• How far it is moved vertically • Its weight
How do you calculate the change in an object’s gravitational potential energy store when moved up or down?
Change in an object’s gravitational potential energy store = weight (N) x change of height (m)
How do you calculate the weight of an object in newtons?
Mass x gravitational field strength
What is the Greek letter delta used for in physics?
To represent the phrase ‘change in’ or ‘difference in’
What is the formula used to calculate the amount of energy in an object’s kinetic energy store?
Kinetic energy = 1/2 x mass x speed squared
What is the formula to calculate elastic potential energy?
Elastic potential energy = 1/2 x spring constant x extension squared