A toy glider of mass 1.25 kg is flying at a constant speed in a horizontal circle at one end of a 35-m cord and at a height of 20 m. The other end of the cord is tethered to the ground. The glider makes 4.6 rev/min and the lift is perpendicular to the wings. (a) What is the acceleration of the glider? (b) What is the tension in the cord? (c) What is the lift produced by the glider's wings?