Gravitation Question 68
Question:A body weight 500 N on the surface of the earth. How much would it weigh half way below the surface of the earth[Pb. PET 2001; BHU 2004]
Options:
A) 125 N
B) 250 N
C) 500 N
D) 1000 N
Show Answer
Answer:
Correct Answer: B
Solution:
Weight on surface of earth, $ [mg=500N] $
and weight below the surface of earth at $ [d=\frac{R}{2}] $
$[m{g}’=mg\left( 1-\frac{d}{R} \right)=mg\left( 1-\frac{1}{2} \right)=\frac{mg}{2}=250N] $
