A uniform bar AB of length 2 m. and mass 5 kg hanging freely frem a froctionless pivot at A is struck by a 25 gm bullet moving with a velocity of 500 m/s and making an angle of 30° with the horizontal . The bullet pierces through the bar at P and emerges with a velocity , which is 40percent of its initial value . ( AP = 1.5 m )
a) what is the initial angular impulse about A ??
b) what is the angular velocity of the bar just after the bullet emerges ??
c) what is the heat produced due to penetration ??
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