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Three spherical balls of masses 1 kg, 2kg and 3 kg are placed at the corners of an equilateral triangle of side 1 m. The magnitude of the gravitational force exerted by 2 kg and 3 kg masses on 1 kg mass.

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a

19G

b

√17 G

c

√19 G

d

G/√17

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detailed solution

Correct option is C


F1=G·1×212=2G
F2=G·1×312=3G
F=F12+F22+2F1F2cos600
=G22+32+2×2×3×12=G×19

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