Suppose a vertical tunnel is along the diameter of earth (here earth is assumed to be a sphere of uniform mass density ρ). If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the centre is given by

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

4π3 Gρym

34πρy

43πρy

43πGρy

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

a=g'=g1-hR=gR-hR=gR·y (∵R-h=y)=GMR2R·y=GR343πR3ρ·y=43πρGy

Watch 3-min video & get full concept clarity