A simple pendulum is constricted from a short metal rod of the mass 1 kg and of the length 3 m suspended horizontally to the ground by by themiddle on a weightless wire of the length 3 m (see picture below). The rod is carrying current of 2 A. The observed frequency of this pendulum in thegravitational field of strength gis 10 Hz. Magnetic field of 3.1 T is then turned on perpendicular to the rod (see picture below). Calculate the period ofthe pendulum in magnetic field. Provide your answer in SI units.Side view///////Top view0are ofmotionBB

Mass of rod (m) = 1kg Length of road (L)= 3 m Current (i ) = 2A Magnetic field (m)= 3.1 T

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