- Who invented gravity?
- What is the force of the gravity?
- What is the three laws of gravity?
- Can gravity be proven?
- What is value of G?
- Is gravity a real force?
- How did Einstein explain gravity?
- What is the formula for gravitational force?
- What is the pulling force of gravity?
- How is 9.81 calculated?
- Where is Earth’s gravity weakest?

## Who invented gravity?

Sir Isaac NewtonNARRATOR: Sir Isaac Newton contributed several key principles to the studies of science and mathematics in the fields of optics, calculus, and mechanics.

Among Newton’s most renowned work is the theory of universal gravitation–or gravity–which holds that a universal force of attraction exists between all matter..

## What is the force of the gravity?

Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. … On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.

## What is the three laws of gravity?

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

## Can gravity be proven?

Scientists say they have proven the existence of gravitational waves — the ripples in space-time that stem from objects moving throughout the Universe. If true, it’s the first time these waves have been measured directly and marks one of the biggest scientific discoveries in decades.

## What is value of G?

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2. When discussing the acceleration of gravity, it was mentioned that the value of g is dependent upon location.

## Is gravity a real force?

General relativity is his theory of gravity, and gravity is certainly the paradigmatic example of a “real” force. The cornerstone of Einstein’s theory, however, is the proposition that gravity is itself a fictitious force (or, rather, that it is indistinguishable from a fictitious force).

## How did Einstein explain gravity?

GETTING A GRIP ON GRAVITY Einstein’s general theory of relativity explains gravity as a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.

## What is the formula for gravitational force?

The mathematical formula for gravitational force is F=GMmr2 F = G Mm r 2 where G is the gravitational constant.

## What is the pulling force of gravity?

Gravity is an attractive force that exerts a pull between two objects, such as a baseball and the earth. According to Sir Isaac Newton’s Law of Universal Gravitation, all objects that have mass are attracted to each other. Mass is the measure of an object’s matter (what it’s made up of).

## How is 9.81 calculated?

The acceleration g=F/m1 due to gravity on the Earth can be calculated by substituting the mass and radii of the Earth into the above equation and hence g= 9.81 m s-2.

## Where is Earth’s gravity weakest?

equatorGravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet’s rotation.