1.

Force on a 1 kg mass on earth of radius R is 10 N. Then the force on a satellite revolving around the earth in the meanorbital radius 3R//2 will be (mass of satellite is 100 kg):

Answer»

`4.44xx10^(2)N`
`500 N`
`3.33xx10^(2)N`
`6.66xx10^(2)N`

Solution :`F=(GMM)/(R^(2)) rArr 10=(GM)/(R^(2))`
When radius of satellite`r=(3)/(2)R`. Then
`F.=(GMm.)/(r^(2))=(GMxx100)/(((3)/(2)R)^(2))=(GM)/(R^(2)).(100)/(9)xx4=10xx(400)/(9)`
`=4.4xx10^(2)N`.
THUS correct choice is (a).


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