A 1.00-g cork ball with charge 2.00 *C is
suspended vertically on a 0.500-m-long light string in the
presence of a uniform, downward-directed electric field of
magnitude E ! 1.00 & 105 N/C. If the ball is displaced
slightly from the vertical, it oscillates like a simple pendulum.
(a) Determine the period of this oscillation.
(b) Should gravity be included in the calculation for part
(a)? Explain.
gravity won't be included in the calculation.
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