Table of contents

0. Math Review31m
- Math Review
  31m
1. Intro to Physics Units1h 29m
2. 1D Motion / Kinematics3h 56m
3. Vectors2h 43m
4. 2D Kinematics1h 42m
5. Projectile Motion3h 6m
6. Intro to Forces (Dynamics)3h 22m
7. Friction, Inclines, Systems2h 44m
8. Centripetal Forces & Gravitation7h 26m
9. Work & Energy1h 59m
10. Conservation of Energy2h 54m
11. Momentum & Impulse3h 40m
12. Rotational Kinematics2h 59m
13. Rotational Inertia & Energy7h 4m
14. Torque & Rotational Dynamics2h 5m
15. Rotational Equilibrium3h 39m
16. Angular Momentum3h 6m
17. Periodic Motion2h 9m
18. Waves & Sound3h 40m
19. Fluid Mechanics4h 27m
20. Heat and Temperature3h 7m
21. Kinetic Theory of Ideal Gases1h 50m
22. The First Law of Thermodynamics1h 26m
23. The Second Law of Thermodynamics3h 11m
24. Electric Force & Field; Gauss' Law3h 42m
25. Electric Potential1h 51m
26. Capacitors & Dielectrics2h 2m
27. Resistors & DC Circuits3h 8m
28. Magnetic Fields and Forces2h 23m
29. Sources of Magnetic Field2h 30m
30. Induction and Inductance3h 38m
31. Alternating Current2h 37m
32. Electromagnetic Waves2h 14m
33. Geometric Optics2h 57m
34. Wave Optics1h 15m
35. Special Relativity2h 10m

10. Conservation of Energy

Gravitational Potential Energy

Physics

10. Conservation of Energy

Gravitational Potential Energy

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Multiple Choice

Which of the following is an example of gravitational potential energy rather than kinetic energy?

A cyclist pedaling on a flat road

A rock resting at the edge of a cliff

A car driving down a hill

A ball rolling on the ground

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Verified step by step guidance

Understand the difference between kinetic energy and gravitational potential energy. Kinetic energy is the energy of motion, while gravitational potential energy is the energy stored due to an object's position in a gravitational field.

Identify the key characteristics of gravitational potential energy. It depends on the object's mass, the height above a reference point, and the gravitational acceleration. The formula is:

E p_{g} = m g h

, where

m

is mass,

g

is gravitational acceleration, and

h

is height.

Analyze each option: A cyclist pedaling on a flat road involves motion, indicating kinetic energy. A car driving down a hill also involves motion, indicating kinetic energy. A ball rolling on the ground is in motion, indicating kinetic energy.

Consider the option of a rock resting at the edge of a cliff. The rock is not in motion, but it is positioned at a height above the ground, which means it has gravitational potential energy.

Conclude that the rock resting at the edge of a cliff is an example of gravitational potential energy, as it is not moving but has energy due to its position in a gravitational field.