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September 16, 2014

Homework Help: physics

Posted by Claire on Tuesday, July 22, 2008 at 1:11pm.

You know that you can safely stand on the hang-over end of a heavy plank that rests on a table. How far depends on your mass and the mass of the plank. Suppose you can stand on the end of a plank that overhangs the edge of the supporting table 1/4 its total length. Then how massive is the plank compared to your mass?

a. 1/2 your mass
b. same as your mass
c. 1 1/2 your mass
d. twice your mass
e. 4 times your mass

any help would be appreciated!

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