A simple pendulum of period T has a metal bob | vedclass

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Question

(B) The period of a simple pendulum is given by $T = 2\pi \sqrt{\frac{l}{g_{eff}}}$.When a negatively charged bob oscillates above a positively charge

Vedclass · Accepted Answer

Be less than $T$

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(B) The period of a simple pendulum is given by $T = 2\pi \sqrt{\frac{l}{g_{eff}}}$.When a negatively charged bob oscillates above a positively charged plate,an additional electrostatic force $F_e$ acts on the bob in the downward direction (towards the plate).This electrostatic force adds to the gravitational force,increasing the effective acceleration due to gravity,$g_{eff} = g + \frac{F_e}{m}$.Since $g_{eff} > g$,the denominator in the formula for $T$ increases.Therefore,the new period $T'$ will be less than the original period $T$.

$A$ simple pendulum of period $T$ has a metal bob which is negatively charged. If it is allowed to oscillate above a positively charged metal plate,its period will

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