In forensic science, it is useful to measure the speed at which firearms propel bullets. Before...

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Physics

In forensic science, it is useful to measure the speed at whichfirearms propel bullets. Before modern instruments, this was donewith a device called a â€œballistic pendulumâ€, consisting of a blockof some soft material hanging from the end of a string. Theexperimenter fires a bullet into the block, which lodges into it;the block swings up at an angle. By measuring the angle, theexperimenter can determine the velocity of the bullet.
Suppose that you are a detective trying to measure the velocityof the bullets fired from a particular gun. You construct aballistic pendulum out of a string of length 50 cm and a clay blockof mass 2 kg, and fire a bullet into it. If the bullet has a massof 2.6 grams and the pendulum swings up to an angle 13.4 degrees,how fast was the bullet traveling when it struck the block?
Show all work and Thanks in advance!

Answer & Explanation Solved by verified expert

4.4 Ratings (955 Votes)

The collision of the bullet and block will be completelyinelastic because they stick together after the collisionBefore the collision the block simply See Answer

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