14) The mass of a planet is 1 25 th of the mass of the earth . The distance between the planet and the earth is 6 × 10 8 m. At what distance from the earth , the gravity becomes zero 1) 1 × 10 4 m 2) 0 . 32 × 10 m 4 3) 5 × 10 4 m 4) 0 . 032 × 10 4 m Share with your friends Share 0 Sandeep K. Gupta answered this Dear Student, Given - MP=125ME , Distance between the earth ans planet is r=6×108mLet at a distance x from the earth gravity which means gravitatioal field becomes zero thendistance from the planet will be (r-x).for zero field-I1=I2GMEx2=GMP(r-x)2 ⇒ GMEx2=125GME(r-x)2take square root of both side-1x=15(r-x) ⇒ x=5r6=5(6×108m)6=5×108m r=5×108m Regards 2 View Full Answer