Question: The masses in a Cavendish apparatus are m 1 = 12 kg and m 2 = 15 g, and the separation of their centers is

The masses in a Cavendish apparatus are m1 = 12 kg and m2 = 15 g, and the separation of their centers is 7 cm.

(a) What is the force of attraction between these two masses?

(b) If the rod separating the two small masses is 18 cm long, what torque must be exerted by the suspension to balance the torque exerted by gravity?

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