Homework Help: phsycis

Posted by nate on Thursday, September 20, 2012 at 8:54pm.

A tight-rope walker walks across a 30.0 m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is half-way across. If the tension in both halves of the wire at this point is 3675 N, what is the mass of the tight-rope walker? Neglect the mass of the wire

phsycis - Scott, Saturday, September 22, 2012 at 8:11pm
the force diagram reflects the physical setup

the walker is 15.0 m from either end; and is displacing the wire 1.0 m

this means that the vertical component of the tension is one-fifteenth the tension in the wire (on BOTH sides)

so the force exerted by the walker is 3675/15 * 2

the mass of the walker is the force, divided by gravitational acceleration (g)

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