Question
A 25 gm bullet is fired into a 2.25kg ballistic pendulum and becomes embedded in it. If the pendulum moves a vertical distance of 10cm, calculate:
A. The speed of the system after collision
B. The initial speed of the bullet
C. The percentage of the energy lost in the process.
A. The speed of the system after collision
B. The initial speed of the bullet
C. The percentage of the energy lost in the process.
Answers
bobpursley
you know conservation of momentum applies.
what PE is in the bullet/block at 10 cm? That must equal KE of the block/bullet after impact, so you can solve for the velocity.
Now momentum applies, so the initial momentum of the bullet must equal the momnetum of the block/bullet. That will solve it.
what PE is in the bullet/block at 10 cm? That must equal KE of the block/bullet after impact, so you can solve for the velocity.
Now momentum applies, so the initial momentum of the bullet must equal the momnetum of the block/bullet. That will solve it.