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

According to Newton's Law of Gravity, which region of Earth experiences the strongest gravitational pull from the Sun due to receiving direct sunlight?

The Poles

The Tropic of Capricorn

The Tropic of Cancer

The Equator

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Verified step by step guidance

Understand that Newton's Law of Gravity states that the gravitational force between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. The formula is:

F = \frac{G m_{1} m_{2}}{r^{2}}

, where

G

is the gravitational constant,

m_{1}

and

m_{2}

are the masses, and

r

is the distance between the centers of the two masses.

Recognize that the gravitational pull from the Sun on Earth is not significantly affected by the Earth's rotation or the position of the Sun relative to the Earth's surface, as the distance from the Sun to any point on Earth is nearly the same due to the vast distance involved.

Consider the concept of direct sunlight, which refers to the angle at which sunlight strikes the Earth. Direct sunlight occurs when the Sun is directly overhead, which happens at the Equator during the equinoxes.

Understand that the gravitational pull from the Sun is uniform across the Earth's surface because the Earth is approximately spherical and the distance to the Sun is much greater than the Earth's diameter. Therefore, the gravitational pull is not stronger at any specific region due to sunlight.

Conclude that the question is more about the angle of sunlight rather than gravitational pull. The Equator receives direct sunlight during equinoxes, but this does not affect the gravitational pull from the Sun. The gravitational pull is essentially the same across the Earth's surface.