Friday, July 2, 2010

COULOMB FRICTION

65# thrusters x 20
pull ups x 20
push ups x 20
90# sled drag x 50 mtrs
...x 15
...x10
...x5
for time

1 comment:

  1. 8:16
    With constant speed on every movement and transition, the one variable was the speed at which the sled was pulled through the shifting terrain. There was one point in particular where it seemed to "stick" to the sand. Either way, the variable friction prevented settling into a pace. The program was intended to use the sled as active rest but failed and provided the pre-fatigue needed to justify doing otherwise exceptionally light thrusters. The poor electromagnetic relationship between the sled and the sand makes it difficult to calculate the force needed to overcome the dry friction of the task; however, the nominal force generated to overcome the friction can be assumed if all things are equal. The ability to generate enough horsepower to overcome any degree of friction doesn't necessarily guarantee success. Machines can fail for any number of reasons but humans, although capable of sustainment, fail in other ways. Unbridled effort is stifled not so much by snapped pulleys and worn lug nuts as it is by the mental friction, obstructing the lawful orders from the mind to the body. Structural calamities can interfere with signals, making execution partial at best. If we could calculate the force needed to overcome the friction prior to commencement and adjust output accordingly each session would be as mechanical as adjusting the windage and elevation on a rifle in order to meet the demands of distance. Is the human quality a blessing or a curse? Are we men or machines? Can we learn how to dial ourselves in to meet the unpredictable demands of nature? We train so as to earn the capability to overcome anything; however, one little glitch in the software can render the simplest task the most daunting.

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