he ballistic pendulum is a simple device to measure projectile velocity v by observing the maximum angle e to which the box of sand vith embedded projectile swings. Calculate the angle e if the 2.7-oz projectile is fired horizontally into the suspended 59-lb box of and with a velocity v = 2150 ft/sec. Also find the percentage n of energy lost during impact. le 4.4' nswers: n =

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