Posted by Urgent pls help on Monday, March 18, 2013 at 3:02am.
A 10 g bullet is fired horizontally into a 1 kg block of wood hanging from a 1 m long string attached to the ceiling, getting stuck in the block. Due to the impact, the block then swings on the string to a maximum angle of 60 degrees with respect to the vertical. How fast was the bullet traveling in m/s?
Details and assumptions
The acceleration of gravity is −9.8 m/ss.
You may neglect air resistance.

Physics  drwls, Monday, March 18, 2013 at 4:13am
http://hyperphysics.phyastr.gsu.edu/%E2%80%8Chbase/balpen.html

Physics  Stranger, Monday, March 18, 2013 at 5:14am
i could not get there hw to put angle

Physics  abcd, Tuesday, March 19, 2013 at 12:05pm
That's easy. From the given conditions, height= length/2
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