Question

An object has released on the surface of a certain planet where gravitational field strength is more than the Earth (g =10 N/kg). What will be the acceleration of the object due to gravity on that planet? In this option:-

i. faster than Earth

ii. slower than Earth
iii. same as Earth

iv. acceleration will be zero.​

Answer 1

Answer:

Question1.

How does the force of gravitation between two objects change when the distance between them is reduced to half?

Answer:

According to Universal law of gravitation, the force of attraction between 2 bodies is:-

F = (G m1m2)/r2

Where m1m2 = the masses of the two bodies,

r = distance between them

G = gravitational Constant

When the distance is reduced to half i.e. r’ = (1/2) r then,

F’ = (G m1m2)/r2

= (G m1m2)/(r/2)2

= (4 G m1m2)/ (r2) = 4F

Therefore when the distance between the objects is reduced to half, then the force of gravitation increases by four times the original force.

Explanation:

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