1.

There are two bodies of masses 10^(3) kg and 10^(5) kg separated by a distance of 1 km. At what distance from the smaller body, the inensity of gravitational field willbe zero

Answer»

1/9 km
1/10 km
1/11 km
10/11 km

SOLUTION :`(G XX 10^(3))/((R)^(2)) = (G xx 10^(5))/((1 -r)^(2))`
`(1)/(r^(2)) = (10^(2))/((1 - r)^(2))`
`(1)/(r) = (10)/(1 - r) rArr 10r = 1 - r `
`THEREFORE r = (1)/(11) ` km


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