phys14200-quiz01sol

# phys14200-quiz01sol - PLEASE PRINT NAME M— last first...

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Unformatted text preview: PLEASE PRINT NAME: M— , last first PHYSIC 142 UIZ No. 1 W d Janu 6 200 1 inutes losed book 1. Recall that the period, for small displacements of a simple pendulum of mass m and length L, / / is giygn by T = 2 n: N/(L/ g) where g is the local acceleration due to gravity. Suppose we now add a charge of +Q to the mass and suspend the pendulum from a pivot in Kersten 120 over a very large horizontal sheet of charge of uniform density +0. What is the period for small displacements here? Discuss b 'eﬂ an interestin c ses (Do W derive or solve the pendulum problem from ﬁrst principles) PFNWWW we Isl/ow ~m,+Q DYNAMcts DIFFWM'A'L . H, / FMoon-. 2% ’o *PH‘lsl66. st 25mm“ Falter ts Dw— PERM/m1 I ‘2: 0" \LF‘éﬂ‘g/ Bury FE‘QB % MET Fem—i, ”3%:m3-a_£ : - - 6.55.2 ' (54" ’6 25m ’ L. ‘ ‘ T‘ 9:17 04 5' 76-.M W Oahu-=1) ( W w No OSCILQ ' (’7 95:90? DOOM! ...
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