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Problem 55 Medium Difficulty

In deep space, two spheres each of radius 5.00 $\mathrm{m}$ are connected by a $3.00 \times 10^{2} \mathrm{m}$ nonconducting cord. If a uniformly distributed charge of 35.0 $\mathrm{mC}$ resides on the surface of each sphcre, calculate the tension in the cord.

Answer

since both the spheres possess same kind of charge, they repel each other. Thus, the tension force in the string that connects the two spheres must balance with electric force of repulsion. Thus tension in the string is 115 $\mathrm{N}$ .

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Video Transcript

attention in a string will be equal to the electrostatic force electro static force. Between these are articles so we can write F physical detention, which is equal to K. Q squared, divided by our square, was substituting value for cages nine times gentle about nine times the curie's 35 times 10 to the bar with minus three square, divided by distance is a 3.1 old times 10 to the power to square. Excuse us the force, which is a call to attention that is 115 Newton.

Wesleyan University
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