NEET UG PHYSICS MCQ: GRAVITATION

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Analyzing +4 | -1

A particle of mass

m

is dropped from a great height

h

above the hole in the earth dug along its diameter. Then, which of the following statement is correct?

View answer and explanation

Correct option: D

The speed of the particle at the centre of earth equals

\sqrt{\frac{G M(R+3 h)}{R(R+h)}}

, where

R

and

M

are the radius and mass of the earth, respectively.

Option D (The speed of the particle at the centre of earth equals

\sqrt{\frac{G M(R+3 h)}{R(R+h)}}

, where

R

and

M

are the radius and mass of the earth, respectively.) is correct because it is derived from the conservation of energy principle.

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