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 the middle 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 the gravitational field of strength g is 10 Hz. Magnetic field of 5 T is then turned on perpendicular to the rod (see picture

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 the middle 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 the gravitational field of strength g is 10 Hz. Magnetic field of 5 T is then turned on perpendicular to the rod (see picture

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