A 0.15kg bullet is fired into a 1.85kg block that is hanging from a 45cm string. What minimum...

Question

A 0.15kg bullet is fired into a 1.85kg block that is hanging from a 45cm string. What minimum initial bullet speed is required if the bullet and block are to make one complete revolution?

David · Accepted Answer

A bullet with mass 0.15kgm   is fired into a block with mass 1.85kgM  that is hanging from 
a string of length 45cm.L  We wish to determine the minimum initial bullet speed required 
from the bullet and block to make one complete revolution.
Let v  be the initial speed of the bullet and let V  be the speed of the bullet and block once the 
bullet penetrates the block.

A 0.15kg bullet is fired into a 1.85kg block that is hanging from a 45cm string. What minimum initial bullet speed is required if the bullet and block are to make one complete revolution?

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