TheGravitational field is the space around the planet up to where the effect of gravity can be felt.
It is the force experienced by a unit mass of an object, within the gravitational field. Its SI unit is N/kg
The gravitational field intensity is calculated by using following formula:
If the object is on the surface I =
If the object is at height H =
If the object is at certain distance d =
They are the points which border the space with the gravitational field.Neutral points are those points in the space at where the gravitational field intensity is zero.The artificial satellites which have launched from the earth generally revolve around the neutral points.
The gravitational field intensity of the earth = E1
The gravitational field intensity of the earth when it is squeezed to the size of the moon = E2
Radius of the earth (R1)= 63.8 × 105 m
Radius of the moon (R2)= 1.7 × 106 m
We have, \
or,E2 = 14.08 E1
Thus, the gravitational field intensity of the earth will increase by about 14 times, if it is squeezed to the size of the moon.
Define gravitational field.
The space around a planet where the gravity of the planet has its influence on an object is the gravitational field.
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