Textbook Question
CALC A particle of mass m has the wave function ψ(x) = Ax exp (−x²/a²) when it is in an allowed energy level with E = 0. Find and graph the potential-energy function U(x).
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10. Conservation of Energy
Gravitational Potential Energy
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is an example of gravitational potential energy?
A
A spinning top
B
A book resting on a shelf
C
A compressed spring
D
A car moving at a constant speed
Verified step by step guidance1
Identify the concept of gravitational potential energy: It is the energy an object possesses due to its position in a gravitational field, typically related to its height above a reference point.
Consider the options given: A spinning top, a book resting on a shelf, a compressed spring, and a car moving at a constant speed.
Analyze each option: A spinning top has kinetic energy due to its motion, a compressed spring has elastic potential energy, and a car moving at a constant speed has kinetic energy.
Focus on the book resting on a shelf: This object is elevated above the ground, and its energy is due to its position in the gravitational field, which is characteristic of gravitational potential energy.
Conclude that the book resting on a shelf is the correct example of gravitational potential energy, as it is the only option where energy is stored due to height in a gravitational field.
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