Three equal charges each having a magnitude of 2.0×10^-6 C are placed at three corners of a right angled triangle of sides 3cm ,4cm and 5cm. Find force on the charge at the right angle corner.
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Three equal charges each having a magnitude of 2.0×10^-6 C are placed at three corners of a right angled triangle of sides 3cm ,4cm and 5cm. Find force on the charge at the right angle corner.
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1. Force between charges at B and A is F(AB) = 9 × 10^9 × [(2 × 10^-6)^2 ] / (3×10^-2)^2=40 N outwards.
2. Force between B and C isF(BC) = 9 × 10^9 × [(2 × 10^-6)^2 ] / (4×10^-2)^2= 22.5 N outwards.
3. Resultant Force is F(res) = sqrt(F1^2 + F2^2 + 2F1F2cos(90)) as the angle between the forces is 90 degrees.
∴ The resultant force is 45.9 N
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