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

8. Centripetal Forces & Gravitation

Newton's Law of Gravity

Physics

8. Centripetal Forces & Gravitation

Newton's Law of Gravity

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Multiple Choice

Which of the following describes a role of gravity in the early stages of the solar system?

Gravity caused the initial collapse of a gas cloud to form the solar nebula.

Gravity had no significant effect on the distribution of matter in the solar system.

Gravity prevented the formation of planets by dispersing material.

Gravity only influenced the orbits of planets after they were fully formed.

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Verified step by step guidance

Understand the concept of gravity: Gravity is a fundamental force that attracts two bodies towards each other. In the context of the solar system, it plays a crucial role in the formation and evolution of celestial bodies.

Recognize the role of gravity in the formation of the solar system: In the early stages, gravity caused the collapse of a gas cloud, leading to the formation of the solar nebula. This is a key process in the creation of stars and planetary systems.

Identify the incorrect statements: Gravity did not prevent the formation of planets by dispersing material; rather, it helped gather material together. Additionally, gravity had a significant effect on the distribution of matter, contrary to the statement that it had no significant effect.

Clarify the influence of gravity on planetary orbits: While gravity influences the orbits of planets, it does so throughout their formation and existence, not only after they are fully formed.

Conclude the correct role of gravity: The correct description of gravity's role in the early solar system is its ability to cause the initial collapse of a gas cloud, forming the solar nebula, which is essential for the creation of the solar system.