Question

Raju reads from a blog that astronomers have discovered a planet A
whose mass is 12 times the mass of the Earth and the radius of planet A is 6
times the radius of planet Earth. It seems that planet A has no atmosphere.
(4x1=4)
i)What is the acceleration due to gravity of the planet A with respect to Earth.
a) 3g b)4g c) 1/3g d)1/4g
ii) what would be the the weight of the object on the planet A if the same
object weighs 96 N on earth?
a)30 N b) 31 N c) 32N d) 33N
iii)What is the value of gravitational constant G on planet A with respect to
Earth?
a) Same as on Earth b) greater than that of Earth c) lesser than that of Earth
d) None of the above
iv)If a huge steel ball & a small wooden ball are dropped at the same time from
a building on Planet A, which one of them will reach the surface faster?
a) Steel ball b) wooden ball c) both of them d) None of them reach the surface
in the absence of atmosphere
v) Out of planet A, Earth & moon (ignoring the presence or absence of
atmosphere) whose surface gives more reaction?
a) Planet A b) Earth c) Moon d) None of the above

Answer 1

Answer:

here is answer

Explanation:

1.

1/3g

2.

96/3= 32

3.

G remain same it is constant

4.

iv both will reach same time gravity force same for both

5.A