Q.
A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere (you may take G=6.67×10−11Nm2/kg2)
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
6.67×10−9J
b
6.67×10−10J
c
13.34×10−10J
d
3.33×10−10J
answer is B.
(Unlock A.I Detailed Solution for FREE)
Detailed Solution
Potential energy of system of two massU=−GMmR=−6.67×10−11×100×10×10−310×10−2U=−6.67×10−10JSo, the amount of work done to take the particle up to infinite will be 6.67×10−10J
Watch 3-min video & get full concept clarity