1.1 Theoretical Calculations Consider a system where a point charge Q with mass m hangs from a massless string (of length L), as shown in Figure 1. Another point charge is attached firmly to a horizontal, non-conducting rigid rod (see Fig. 1). Using a free-body diagram and Newton's 2nd law, show that the magnitude of the electrostatic Coulomb force Fe between the two point-masses is given by: Fe = mg tan(0), where is the angle the massless string makes with respect to the vertical. (2)
1.1 Theoretical Calculations Consider a system where a point charge Q with mass m hangs from a massless string (of length L), as shown in Figure 1. Another point charge is attached firmly to a horizontal, non-conducting rigid rod (see Fig. 1). Using a free-body diagram and Newton's 2nd law, show that the magnitude of the electrostatic Coulomb force Fe between the two point-masses is given by: Fe = mg tan(0), where is the angle the massless string makes with respect to the vertical. (2)
Chapter5: Electric Charges And Fields
Section: Chapter Questions
Problem 52P: Suppose Earth and the Moon each carried a net negative charge Q . Approximate both bodies as point...
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Transcribed Image Text:1.1 Theoretical Calculations
Consider a system where a point charge Q with mass m hangs from a massless string (of length L), as shown
in Figure 1. Another point charge is attached firmly to a horizontal, non-conducting rigid rod (see Fig. 1).
Using a free-body diagram and Newton's 2nd law, show that the magnitude of the electrostatic Coulomb force
Fe between the two point-masses is given by:
Fe = mg tan(0),
where is the angle the massless string makes with respect to the vertical.
(2)
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