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Homework 9 key; problem for tomorrow

Hello everyone-

The key for HW 9 is posted; I'll post HW 10 problems first thing tomorrow.

Tomorrow, I am going to start the lecture by discussing the following problem:

You fire a bullet, of mass 9.00g, at 860m/s into a wooden door of mass 18kg and width 0.85m. The bullet hits the door at a right angle, 0.75cm away from the hinges (the axis of rotation), and becomes lodged in the wood. The hinges are frictionless, of course. What is the resulting angular velocity of the door?

Posted by Jay Austin on November 6, 2008 4:13 PM |

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