Questions
If the radius of the earth decreases by 10%, the mass remaining unchanged, what will happen to the acceleration due to gravity?
detailed solution
Correct option is D
g=GMR2 ..........(i)g′=Gm90100R2=10081GMR2 .........(ii)From Eqs. (i) and (ii),g′=10081g⇒g′g=10081g′g−1=10081−1∴ Δg=1981g=23% of gSo increase is more than 19% of g.Talk to our academic expert!
Similar Questions
A uniform ring of mass M and radius r is placed directly above a uniform sphere of mass 8 M and of same radius R. The centre of the ring is at a distance of d = R from the centre of the sphere. The gravitational attraction between the sphere and the ring is
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