gravitational force
Học thuậtThân thiện
Definition
- Noun:
- The force of attraction between all masses in the universe: Gravitational force is a fundamental physical interaction that causes all objects with mass to attract one another.
- Especially Earth's attraction: It commonly refers to the specific force that pulls objects toward the center of the Earth, giving them weight.
Usage Examples
- Noun:
- The gravitational force of the moon causes the ocean tides.
- A spacecraft must achieve high speed to escape Earth's gravitational force.
- The gravitational force between two small objects is extremely weak.
Advanced Usage
"To overcome gravitational force": to apply enough energy to move against this attraction.
- Rockets require immense thrust to overcome gravitational force and reach orbit.
"The effects of gravitational force": the observable consequences of this attraction.
- The effects of gravitational force are evident in the orbits of planets.
Variants and Related Words
Gravity (n): Often used interchangeably with "gravitational force," especially when referring to the force near a celestial body like Earth.
- The gravity on Mars is about 38% of Earth's.
Gravitation (n): The universal phenomenon of attraction between masses; sometimes used more broadly than "gravitational force."
- Newton's law of universal gravitation describes this force.
Synonyms
- Attraction: The act or force of drawing objects together.
- Pull: A force that moves something toward the source of the force.
Related Phrases
Gravitational pull: A common phrase meaning the same as gravitational force.
- The gravitational pull of the sun keeps the planets in their orbits.
Gravitational field: The region of space around a mass where its gravitational force can be felt.
- Objects within a planet's gravitational field experience its pull.
Related Concepts
- Law of Universal Gravitation: The scientific principle stating that every particle attracts every other particle with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
- Weight: The force exerted on a mass by a gravitational field.
Noun
- (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface
- the more remote the body the less the gravity
- the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them
- gravitation cannot be held responsible for people falling in love--Albert Einstein