Gravity

Newton's law of gravitation, Gravitational field strength, Field strength

Gravity

Gravitation around an object

Gravitational field/ Field strength

It represents the gravitational force per unit mass acting on a small test mass placed in the field. (g=Gm/r²)

Newton’s law of gravitation

The force between two objects is proportional to the product of the mass and inversely proportional to the separation squared. (F~1/r²)

Gravitational force

Force acting between two masses. It is also depends on the mass if mass is bgger, the force is bigger

(F=Gm₁m₂/r²)

Universal gravitational constant

G=6.67×10^-11

Types of field lines

1-Radial fields: Those are generated from the center of the field and it is stronger towards the center of the field.

2-Uniform field: g is approximately the same or remains constant at all points in the field.

Speed of the orbit

V²=GM/ r

As r increases, v increases. Objects that orbit close to the earth’s surface move faster.