# Question

The floor of the basement of a house is 3.0 m below ground level, and the floor of the attic is 4.5 m above ground level.

(a) If an object in the attic were brought to the basement, the change in potential energy will be greatest relative to which floor: (1) attic, (2) ground, (3) basement, or (4) all the same? Why?

(b) What are the respective potential energies of 1.5-kg objects in the basement and attic, relative to ground level?

(c) What is the change in potential energy if the object in the attic is brought to the basement?

(a) If an object in the attic were brought to the basement, the change in potential energy will be greatest relative to which floor: (1) attic, (2) ground, (3) basement, or (4) all the same? Why?

(b) What are the respective potential energies of 1.5-kg objects in the basement and attic, relative to ground level?

(c) What is the change in potential energy if the object in the attic is brought to the basement?

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