Solution to task 431 from Chertov´s for extramural stud

Solution to task 431 from Chertov´s for extramural stud

431. Two ions of different masses with the same charges flew into a uniform magnetic field, began to move in circles with radii R1 = 3 cm and R2 = 1.73 cm. Determine the ratio of the masses of ions if they passed the same accelerating potential difference.