opera E Triangle Calculator E c Three positive Charges Three Positive Charges LO

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opera E Triangle Calculator E c Three positive Charges Three Positive Charges LON CAPA Two pith balls x Finding an Angle Bongs & water pipes Messages Courses Help Logout Tecoria Andria Strother r (Student section: 003) PHY 184 Spring 2015 (002+003) Main Menu Contents Grades Timer Notes Evaluate Feedback Print Course Contents HW 01 (01/26 Mo 10 PM) Two pith balls Two uniformely charged spheres are suspended by strings of length L from vertically adjustable supports The spheres are in static equilibrium and at the same height, as shown below. The angles with respect to the vertical are Q 21.50, and T-11.3 False: The charge on X can be negative and that on Z positive. True: The amount of charge on Z can be equal to that on X. False: The mass of Z can be less than that of X. True: The amount of charge on Z can be less than that on X True The charge on X can be positive and that on Z positive. You are correct. Previous Tries Your receipt no. s 155-2686 The tension in the string supporting sphere X is 2.73E-5 N. Calculate the tension in the other string. Submit Answer Incorrect. Tries 6/12 Previous Tres Post Discussion Send Feedback 9:41 AM

Explanation / Answer

The electrostatic force on X is balanced by the horizontal component of the string Q.

So, TX Sin 21.5o = Electrostatic force .............. (i)

Also,

The electrostatic force on Z is balanced by the horizontal component of the string T.

So, TZ Sin 11.3o = Electrostatic force..................... (ii)

Equating (i) & (ii)

TX Sin 21.5o = TZ Sin 11.3o

TZ = 2.73 * 10-5 * Sin 21.5o / Sin 11.3o = 2.73 * 10-5 * 0.3665 / 0.1959 = 5.1 *10-5 N = 5.1E-5 N.

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