Esta tatuagem é de uma equação que representa algo do tipo:
A força necessária para empurrar uma bicicleta e seu ciclista através do ar e para superar o atrito da tracção.
Fonte: http://blogs.discovermagazine.com
Eis a explicação :)
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There is a well-known equation that gives the power required to push a bike and rider through the air and to overcome the friction of the drive train:
- ,
where is in watts, is Earth's gravity, is ground speed (m/s), is bike/rider mass in kg, is the grade (m/m), and is the rider's speed through the air (m/s). is a lumped constant for all frictional losses (tires, bearings, chain), and is generally reported with a value of 0.0053. is a lumped constant for aerodynamic drag and is generally reported with a value of 0.185 kg/m.[17] If there is no wind, and the result simplifies to:
- ,
which is proportional to the ground speed cubed in its leading term.
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Fonte: http://en.wikipedia.org/wiki/Bicycle_performance
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