An air puck of mass 0.29 kg is tied to a string and allowed to revolve in a circle of radius 1.4 m on a frictionless horizontal table. The other end of the string passes during a hole in the center of the table, and a mass of 0.7kg is tied to it. The suspended mass remains in equilibrium while the puck on the tabletop revolves.
a) What is the speed of the puck?
b) What is the tension in the string?
c) What is the force causing the centripetal acceleration on the puck?