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April 20, 2014

Homework Help: pHysics !!

Posted by kent on Sunday, September 1, 2013 at 11:23am.

A 20-g bullet is fired horizontally into a 980 g block of wood suspended by a long cord. The bullet sticks in the block and causes the block to swing 15 cm above its initial level.
a) What is the momentum of the bullet before it hit the block?
b) Determine the velocity of the bullet, u, before it hit the block.
c) If the bullet-block system oscillates continuously, what would be the values of T, f, and
w, if the length of the cord is 1.96 m?

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