What is the weight of the beam?

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SUMMARY

The discussion centers on calculating the weight of a long uniform beam that is pivoted at one end and held horizontally by a force of 300N. The principle of the lever is applied, specifically the equation {F_1}·{d_1} = {F_2}·{d_2}, to analyze the forces and torques acting on the beam. Key considerations include identifying the forces, their points of application, and the net torque required for equilibrium. The solution involves understanding these dynamics to determine the beam's weight accurately.

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Homework Statement


A long uniform beam is pivoted at one end. A force of 300N is applied to hold the beam horizontally.
http://img182.imageshack.us/img182/4219/11062008vt2.png
What is the weight of the beam?

Homework Equations


Don't know which question to use... need help!


The Attempt at a Solution

 
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Ask yourself:
(1) What forces act on the beam? Where do they act?
(2) What torque do they exert about the pivot point?
(3) Since the beam is in equilibrium, what must be the net torque?
 

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