Physics
Gravity
Gravity is a fundamental force of nature that governs the attraction between
objects with mass. It is responsible for keeping planets in orbit around stars,
moons around planets, and objects on Earth grounded.
1. What is Gravity?
Gravity is the force that pulls objects with mass toward each other. The
greater the mass of an object, the stronger its gravitational pull. Gravity is
one of the four fundamental forces in the universe, alongside
electromagnetism, the strong nuclear force, and the weak nuclear force.
Image Description: A diagram showing two masses (e.g., Earth and
the Moon) with arrows indicating the gravitational pull between them.
2. Newton’s Law of Universal Gravitation
Sir Isaac Newton formulated the law of universal gravitation in 1687. It states
that every particle in the universe attracts every other particle with a force
that is directly proportional to the product of their masses and inversely
proportional to the square of the distance between their centers.
Formula:
F=Gm1m2/r^2 1
Where:
F = gravitational force
G = gravitational constant (6.674×10−11 Nm2/kg26.674×10−11Nm2/kg2)
m1 and m2 = masses of the two objects
r = distance between the centers of the two masses
Gravity
Gravity is a fundamental force of nature that governs the attraction between
objects with mass. It is responsible for keeping planets in orbit around stars,
moons around planets, and objects on Earth grounded.
1. What is Gravity?
Gravity is the force that pulls objects with mass toward each other. The
greater the mass of an object, the stronger its gravitational pull. Gravity is
one of the four fundamental forces in the universe, alongside
electromagnetism, the strong nuclear force, and the weak nuclear force.
Image Description: A diagram showing two masses (e.g., Earth and
the Moon) with arrows indicating the gravitational pull between them.
2. Newton’s Law of Universal Gravitation
Sir Isaac Newton formulated the law of universal gravitation in 1687. It states
that every particle in the universe attracts every other particle with a force
that is directly proportional to the product of their masses and inversely
proportional to the square of the distance between their centers.
Formula:
F=Gm1m2/r^2 1
Where:
F = gravitational force
G = gravitational constant (6.674×10−11 Nm2/kg26.674×10−11Nm2/kg2)
m1 and m2 = masses of the two objects
r = distance between the centers of the two masses
