A boy on a cycle pedals around a circle of 20 metres radius at a speed of 20 metres/sec. The combined mass of the boy and the cycle is 90kg . The angle that the cycle makes with the vertical so that it may not fall is (g = 9.8 m/sec2)
(a) 60.25 °
(b) 63.90 °
(c) 26.12 °
(d) 30.00°
