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Grade: 12
        In fig, if net force on Q is 0 then value of Q/Q is
5 months ago

Answers : (1)

Khimraj
1870 Points
							
force on Q due to both q  F1= 21/2(KQq)/r2
force on Q due to another Q F2 = 2(KQq)/r2
Net force on Q
F = F1 +F2 = 21/2(KQq)/r2 + 2(KQq)/r2
Since F is zero. So
0 = 21/2(KQq)/r2 + KQQ/(2r2)
0 = 21/2q + Q/2
then Q/q = 2(21/2).
Hope it clears.
5 months ago
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