Home
Class 12
PHYSICS
The mass of moon is 1/81 of the mass of ...

The mass of moon is 1/81 of the mass of earth. If gravitational force of earth on moon is F, then the gravitational force of moon on earth is

A

F/81

B

F

C

9F

D

81F

Text Solution

Verified by Experts

The correct Answer is:
A
Gravitational force of earth `F = (GM)/(R^(2))m`
Gravitational force of moon, `F. = (G(M)/(81)m)/(R^(2))`
`rArr" "F. = (F)/(81)`
Promotional Banner

Similar Questions

Explore conceptually related problems

The mass of the moon is about 1.2% of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth

The mass of moon 1% of mass of earth. The ratio of gravitational pull of earth on moon and that of moon on earth will be

The mass of the moon is 1/81 of the earth but the gravitational pull is 1/6 of the earth. It is due to the fact that

The mass of the moon is (1)/(8) of the earth but the gravitational pull is (1)/(6) earth It is due to the fact that .

The distance of the centres of moon the earth is D. The mass of earth is 81 times the mass of the moon. At what distance from the centre of the earth, the gravitational force on a particle will be zero.

If the mass of moon is (M)/(81) , where M is the mass of earth, find the distance of the point where gravitational field due to earth and moon cancel each other, from the centre of moon. Given the distance between centres of earth and moon is 60 R where R is the radius of earth

A rocket is fired from the earth to the moon. The distance between the earth and the moon is r and the mass of the earth is 81 times the mass of the moon. The gravitational force on the rocket will be zero when its distance from the moon is

Assertion : On earth's satellite, we feel weightlessness. Moon is also satellite of earth. But on the surface on moon, we do not feel weightlessness Reason : Gravitational force by earth on us on the surface of moon is zero. But gravitational force by moon on us on its surface is non-zero.