Last time we introduced Gaspard-Gustave de Coriolis’ formula to compute kinetic energy. Today we’ll use it to determine the speed of descent, or The Law of Conservation of Energy.Let’s now put a practical spin on this concept and apply it to our coffee mug’s free fall to the floor. Once again, de Coriolis’ formula,
where According to von Mayer’s The mug’s
By substituting this mathematical representation for 4.9 kg • meter m × v (3)^{2} We also know the mug’s mass, 4.9 kg • meter ( 0.25kg) × v (4)^{2} That leaves the mug’s velocity, ½ × ( 0.25kg).(4.9 kg • meter ( 0.25kg)] = v^{2}39.20 meter Finally, we’ll take the square root of the equation to place it in terms of 6.26 meters/second vThe mug’s velocity an instant before impact equates to 6.26 meters/second, or almost 21 feet per second. Next time we’ll discuss a metric unit used to measure energy known as the Copyright 2015 – Philip J. O’Keefe, PE Engineering Expert Witness Blog ____________________________________ |

Tags: energy conversion, falling velocity, forensic engineering de Coriolis, integral calculus, joule, Julius Robert von Mayer, kinetic energy, law of conservation of energy, mechanical engineering expert witness, physics, potential energy, velocity, velocity of falling objects