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i am preparing for the test and i have a problem with the following question.

an image is attached.

On a frictionless table, a glob of clay of mass 0.30 kg strikes a bar of mass 1.20 kg perpendicularly at a point 0.22 m from the center of the bar and sticks to it.

If the bar is 1.34 m long and the clay is moving at 7.3 m/s before striking the bar, what is the final speed of the center of mass?

this i have found 1.460 m/s

At what angular speed does the bar/clay system rotate about its center of mass after the impact?

i am quite confused here.

can u show me how to solve this.

especially as i know i need to find the distance between my the center of mass and the point with respect to which i calculate - how do i calculate the center of mass.

it is a weighed average between distances from the respect point, but what is the distance of the bar. do i use its length or the distance from one side to the place where the clay is?

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# Homework Help: Glob on table

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