Two point charges q = -8.50 µC are fixed 10.0 cm apart along a horizontal bar,as shown in the figure.Their electrical forces will be used to balance the force that Earth exerts on a very small sphere carrying a charge $Q = + 15.0 \mu \mathrm { C }$ 10.0 cm from each of them in a place where g = 9.80 m/s².What is the greatest mass M this sphere can have without falling? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

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The Answer of Two point charges q = -8.50 µC are fixed 10.0 cm apart along a horizontal bar,as shown in the figure.Their electrical forces will be used to balance the force that Earth exerts on a very small sphere carrying a charge $Q = + 15.0 \mu \mathrm { C }$ 10.0 cm from each of them in a place where g = 9.80 m/s².What is the greatest mass M this sphere can have without falling? (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²)

Two Point Charges Q = -8 Q=+15.0μCQ = + 15.0 \mu \mathrm { C }Q=+15.0μC

Two Point Charges Q = -8 $Q = + 15.0 \mu \mathrm { C }$