Homework Help: Science - Physics

Posted by Jen on Tuesday, July 6, 2010 at 3:12pm.

A meter stick is balanced at the 50-cm mark. You tie a 20-N weight at the 20-cm mark. At which mark should a 30-N weight be placed so that the meter stick will again be balanced?

Science - Physics - bobpursley, Tuesday, July 6, 2010 at 3:47pm
Sum moments about the 50 cm mark.

20*30cm=30*X

x=20 cm from the fulcrum, or at the 70cm mark.

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