Question

There is a planet P whose mass is equal to that of the Earth but its radius is half that of the Earth. If an object weighs 2 Newton
on the surface of the Earth. Then its weight on that planet 'P' will be ......
newton.​

Answer 1

Answer:

Weight on that planet 'P' will be 8 N

Explanation:

g ∝ $\frac{1}{R^{2} }$

∵ Radius of Planet P is $R_{E} /2$   [$R_{E} = Radius of Earth$]

g' ∝ $\frac{1}{(\frac{R_{E} }{2} )^{2} }$

⇒ g' = 4g

Since, new acceleration due to gravity is 4 times that of Earth.

The Weight will be 4 times of what it weighs on Earth.