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# Conservation of Energy

Energy cannot be created or destroyed in any transformation. This powerful accounting principle helps us analyze everything from particle collisions, to the motion of pendulums.

The gravitational acceleration is \( g= 10 \text{ m/s}^2. \)

\(G\) is gravitational constant and \(M\) is the mass of the earth. The radius of the earth is \( R = 6000 \text{ km} .\)

The gravitational acceleration is \( g= 10 \text{ m/s}^2. \)

\(G\) is the gravitational constant and \(M\) is the mass of the earth. The radius of the earth is \( R = 6000 \text{ km} .\)

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