Gravity
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun. Anything that has mass also has gravity. Gravity is what gives weight to physical objects and causes objects to fall toward the ground when dropped.
Key Concepts
- Force of Attraction: Gravity is the force of attraction that exists between any two masses, any two bodies, any two particles.
- Acceleration Due to Gravity: The acceleration due to gravity is the acceleration of an object due to the force of gravity. On Earth, the acceleration due to gravity is approximately 9.81 m/s^2.
- Universal Law of Gravitation: The force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Study Tips
- Understand the concept of mass and how it relates to the force of gravity.
- Learn about the factors that affect the strength of gravity, such as mass and distance.
- Practice solving problems related to the acceleration due to gravity and the universal law of gravitation.
- Explore real-life examples of gravity, such as the motion of planets and satellites.
Further Reading
For further exploration of the topic of gravity, consider reading about Isaac Newton's law of universal gravitation and how it revolutionized our understanding of the force of gravity.
