A small metal ball with positive charge q and mass m is attached to a very light string, as shown in (Figure 1). A larger metal ball with negative charge −Q is securely held on a plastic rod attached to the ceiling. The distance between the balls' centers is r. Write an expression for the magnitude of the force T that the string exerts on the ball. Express your answer in terms of the variables q,m,Q, r, and constants k_C and g.

A small metal ball with positive charge q and mass m is attached to a very light string, as shown in (Figure 1). A larger metal ball with negative charge −Q is securely held on a plastic rod attached to the ceiling. The distance between the balls' centers is r. Write an expression for the magnitude of the force T that the string exerts on the ball. Express your answer in terms of the variables q,m,Q, r, and constants k_C and g.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter1: Getting Started

Section: Chapter Questions

Problem 29PQ

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