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Q1. Three charged particles are placed at corners of an equilateral triangle of side 1.20m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc compute the magnitude and direction of the net force on each due to the other two.

Q2. A ring of mass m and radius r lies on its side on the frictionless table. It is pivoted to the table at its rim. A bug of mass M walks round the ring with speed v, starting at the pivot. What is the rotational velocity of the ring as the bug is half way around?

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