Ballistic pendulum

  • Thread starter chawki
  • Start date
  • #1
510
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Homework Statement


The ballistic pendulum is a block of 3.0 kg mass suspended from a thread 2.5 m long. A bullet with a mass of 9.0 g hits the block and sticks in it, the result being a deflection of the system by an angle of 18o.

Homework Equations


Find the bullet’s speed.

The Attempt at a Solution


all i know is t=2*pi*[tex]\sqrt{}(l/g)[/tex]
 

Answers and Replies

  • #2
1,137
0
use conservation of momentum to find final speed

and then use energy conservation principle
 
  • #3
all i know is t=2*pi*[tex]\sqrt{}(l/g)[/tex]
This won't help!

I agree with cupid.callin
 

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