Gravitational Energy

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Define Mass
Mass is a measure of matter in an object. Measured in kg.
Define Weight
Weight is a measure of the gravitational force to which an object is attracted. It changes relative to the position in the universe. Measured in Newtons (N)
What is the formula for Universal Gravitational Force
FG= GM1M2÷d1,2²
Define Gravitational Potential Energy
GPE (Ep or U) is the energy stored by doing work against the force of gravity, is given by FG × d
Formula for Gravitational Potential Energy
-GM1M2/d
Total Energy of System =
Et = Ek + Ep