Tuesday
March 28, 2017

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A uniform stick 1.5 m long with a total mass of 210 g is pivoted at its center. A 3.9-{\rm g} bullet is shot through the stick midway between the pivot and one end The bullet approaches at 250 {\rm{ m}}/{\rm{s}} and leaves at 140 {\rm{ m}}/{\rm{s}}. With what angular speed is the stick spinning after the collision?

• physics - ,

no, it's 5