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

## How do you calculate the force between two bodies?

F=Gm1m2r2 , where:

- F = gravitational force ( N )
- G = gravitational constant ( ~6.67⋅10−11Nm2kg−2.
- m1 and m2 = masses of objects 1 and 2 ( kg )
- r = the distance the centre of gravities of both objects ( m )

## What is the force of attraction?

a force between two bodies, molecules, particles, or the like, that attracts each to the other. … Gravity is the force of attraction between two bodies that have mass.

## How do you calculate the force of attraction between ions?

Ions exhibit attractive forces for ions of opposite charge — hence the adage that “opposites attract.” The force of attraction between oppositely charged ions follows Coulomb’s law: F = k * q_{1} * q_{2} / d^{2}, where F represents the force of attraction in Newtons, q_{1} and q_{2} represents the charges of the two ions in coulombs …

## How do you calculate frictional force?

How to find force of friction

- Choose the normal force acting between the object and the ground. Let’s assume a normal force of 250 N .
- Determine the friction coefficient. …
- Multiply these values by each other: (250 N) * 0.13 = 32.5 N .
- You just found the force of friction!

## Why is the force of attraction negative?

You would have learnt this thing in chemistry (In Atom Structure, you would have calculated energy of electrons for different energy levels b/w electron & proton(nucleus)), that attractive force reduces the energy of the electrons and repulsive force increases the energy of electrons) So since energy corresponding to …

## What is value of G?

In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s^{2} on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s^{2}. … There are slight variations in the value of g about earth’s surface.

## What is force of attraction measured in?

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. At Earth’s surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second.

## How are attractive and repulsive forces distinguished when calculating forces?

The Coulomb force between two or more charged bodies is the force between them due to Coulomb’s law. If the particles are both positively or negatively charged, the force is repulsive; if they are of opposite charge, it is attractive.

## What is the force of attraction between atoms?

Chemical bond refers to the forces holding atoms together to form molecules and solids. This force is of an electric nature, and the attraction between electrons of one atom to the nucleus of another atom contributes to what is known as chemical bonds. … The strength of chemical bonds varies considerably.

## How do you calculate the force required to move an object?

Multiply mass times acceleration.

The force (F) required to move an object of mass (m) with an acceleration (a) is given by the formula F = m x a. So, force = mass multiplied by acceleration.

## How do you calculate the force of kinetic friction?

Kinetic Friction Formula

- Kinetic Friction Formula Questions:
- Answer: On a flat surface, the normal force on an object is η = mg. Using this, the formula can be used to find the force of friction:
- F
_{k}= μ_{k}η - Answer: On a flat surface, the normal force on an object is η = mg. …
- F
_{k}= μ_{k}η