Homework Help: physics

Posted by Ralph on Thursday, July 19, 2012 at 11:48am.

A decorative piece consists of a 20cm long uniform brass rod weighing 4N and two ornaments, one weighing 6N and one weighing 10N, fixed to the ends. At what point should a supporting chain be attached so that the ornament balances?

physics - drwls, Thursday, July 19, 2012 at 12:05pm
At the center of mass (CM).

Measuring distance from the 6N ornament end,
4*10 + 10*20 = 20 X
X = 12 cm is the CM location

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