A 10 g bullet is fired into a 1200 g wood block hanging
Chapter 11, Problem 11.15(choose chapter or problem)
A 10 g bullet is fired into a 1200 g wood block hanging from a 150-cm-long string. The bullet embeds itself into the block, and the block then swings out to an angle of 40. What was the speed of the bullet? (This is called a ballistic pendulum.)
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