A simple pendulum of length 1 m has a wooden bob of mass 1 kg. It is struck by a bullet of mass 10−2 kg moving with a speed of 2×102 m/s. The bullet gets embedded into the bob. The height to which the bob rises before swinging back is. (use g=10 m/s2 )
(a) 19.8 m/s
(b) 21.9 m/s
(c) 16.7 m/s
(d) 10.6 m/s