Question

Question #48cbd

Answer 1

gravity due to force of attraction of earth

Explanation:

gravity is the force of attraction that applied by earth on the objects.Due to gravity,every objects attracted towards the center of earth.

Answer 2

All objects in the universe exert a gravitational force on each other. This force is proportional to the product of their masses and inversely proportional to the square of the distance between them.

Explanation:

The magnitude of the force between two objects can be calculated as follows:

`F = G(Mm)/R^2`

Where `G` is the universal gravitational constant, `M` and `m` are the masses of the two objects, and `R` is the distance between them.

Near the earth's surface (which is where you live) we can simplify and just calculate the force of gravity from the earth as:
`F = mg`
That small letter `g` is really:
`g = G(M)/R^2`
Where `M` is the mass of the earth and `R` is the radius of the earth. Going up a few kilometers or down a few kilometers doesn't change your distance from the earth's center by a large fraction. For most purposes, `g` can be considered to be constant.