GravitationMedium
Question
Three masses $200\text{ }kg,300\text{ }kg$ and 400 kg are placed at the vertices of an equilateral triangle with sides 20 m . They are rearranged on the vertices of a bigger triangle of side 25 m and with the same centre. The work done in this process $\_\_\_\_$ J.
(Gravitational constant $G = 6.7 \times 10^{- 11}\text{ }N{\text{ }m}^{2}/{kg}^{2}$ )
Options
A.$9.86 \times 10^{- 6}$
B.$2.85 \times 10^{- 7}$
C.$1.74 \times 10^{- 7}$
D.$4.77 \times 10^{- 7}$
Solution
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