Wednesday
July 1, 2015

Homework Help: Physics

Posted by Student on Monday, October 8, 2007 at 7:28pm.

A uniform plank of length 5.1 m and weight 235 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 458 N walk on the overhanging part of the plank before it just begins to tip?


Drawing:

0 (person)
---------------------
^ ^ (d = 1.1 from lever to edge)

We just learned torque today and this was assigned as homework...well I thought that since torque is constant....i just calculated the torque of the plank and then divided that by the mass of the person..but this is wrong..what should i do?

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