Task id12407
Two identical charged balls, the mass and charge of which are equal respectively: m=10 g, q=5•10-7 C, are connected by two insulating threads, one with a length of l=10 cm, the other with a length of 2l=20 cm. The system is held by the middle of a long thread in point O, and then the suspension point O is raised with acceleration a=g=9.8 m/s2 vertically upward. Determine the tension in the short string connecting the balls as they rise.
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