In order to increase the amount of exerche in her daily routine, Tara decides to walk up the three nights of stars to her christead of taking the elevator. Each of the steps she takes are 18 cm gh, and there are 12 steps pe a) Ir ara m a of 69.0 kg. what is the change in the gravitational potential energy of the Tora Earth system (in) when she reaches her ? b) If the human body burns 1.5 Calories (6.28 10 for each ten steps dimbed, how much energy ( ) has Tara burned during her dim? How does the energy burned compare to the change in the re a l potential of the system