134. A solid cylinder 30 cm in diameter at the top of an inclined plane 2.0 m high is released and rolls down the incline without loss of energy due to friction. Its linear speed at the bottom is

(a)           5.29  m/sec (b)          4.1 × 103 m/sec (c)           51 m/sec (d)          51 cm/sec Ans. a (63)