A ballistic pendulum is used to measure the speed of high-speed projectiles. A 6-g bullet A is fired into a 1-kg wood block B suspended by a cord of length l = 2.2m. The block then swings through a maximum angle of θ = 60o.

Determine
(a) The initial speed of the bullet vo,
(b) The impulse imparted by the bullet on the block,
(c) The force on the cord immediately after the impact

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B.