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What is the magnitude of the gravitation...

What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is `6xx10^(24)` kg and radius of the earth is `6.4xx10^(6)m`)

Text Solution

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Mass of the object `m=1` kg
Mass of the earth `M=6xx10^(24)kg`
Radius of the earth `R=6.4xx10^(6)m`
Let magnitude of the gravitational force between the earth and the given object
`:.F=(GMm)/(R^(2))`
`=(6.67xx10^(-11)xx6xx10^(24)xx1)/((6.4xx10^(6))^(2))N`
`=9.8N`
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