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April 21, 2014

Homework Help: Physics

Posted by Emily on Thursday, December 6, 2007 at 7:54pm.

This is how the problem starts out:

A meter stick is placed with the fulcrum at the 50-cm mark.

If a 120-g mass is placed at the 25-cm mark and a 25-g mass at the 10-cm mark, where should a 500-g mass be placed to balance the system?

I thought that since the two masses (the 120 and the 25 ones) were on the same side of the fulcrum, you could add the two masses together and just use the longest distance from the fulcrum. Apparently (what my physics teacher told me) this is wrong.

Thanks!

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