You are told that the gravitational potential energy of a 2.0kg object has decre

Question

You are told that the gravitational potential energy of a 2.0kg object has decreased by 10 J. (a) With this information, you candetermine(1) the object's initial height, (2) the object's finalheight, (3) both the initial and the final height, or (4) only thedifference between the two heights. Why ? (b) What can you say has physically happened to theobject? You are told that the gravitational potential energy of a 2.0kg object has decreased by 10 J. (a) With this information, you candetermine(1) the object's initial height, (2) the object's finalheight, (3) both the initial and the final height, or (4) only thedifference between the two heights. Why ? (b) What can you say has physically happened to theobject?

Explanation / Answer

           Given that the mass of object m = 2.0 kg            Thediffrence in the energy is U = 10 J --------------------------------------------------------------           Thepotential energy is U = mgh    where h is the defference in heights. (a) hence only the difference between the twoheights (B) From conservation of energy the potential energy converted as kineticenergy

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