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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Two construction workers pull on the control lever of a frozen valve (Figure P4.14). The lever connects to the valve’s stem through the key that fits into partial square grooves on the shaft and handle. Determine the net moment about the center of the shaft.

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