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Q. An air puck of mass m1 = 0.30 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes by a hole in the center of the table, and a mass m2 = 1.20 kg is attached to it. The suspended mass remains in equilibrium while the puck on the tables revolves.

1) What is the tension T in the string?
2) What is the magnitude of the horizontal force acting on the air puck?
3) What is the speed of the puck?

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