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There are two equations from which a change in the gravitational potential energy u of the system of a mass m and the earth can be calculated. one is
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There are two equations from which a change in the gravitational potential energy u of the system of a mass m and the earth can be calculated. one is

User LyphTEC
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The change in the gravitational potential energy is represented by the equation
u = ΔPE = Δmgh
since the mass of the system will remain constant and the acceleration due to gravity will also remain constant, the equation will become
u = mg Δh
User Dimaaan
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