September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
July 2, 2012
School is out for the summer and it is a normal day, like any other. The sun is shinning, birds are singing in the trees and you’re working part time at the local grocery store, bagging groceries to pay tuition.
December 5, 2011
As both a military policeman during the Vietnam War and as a civilian police officer for 25 years, I was involved in dozens of demonstrations and all-out riots.