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A sprinter had an instantaneous resultant force of 3200 N acting through the heel during heel strike. If the angle of the resultant force was
A sprinter had an instantaneous resultant force of 3200 N acting through the heel during heel strike. If the angle of the resultant force was 125 degrees with respect to the horizontal, what were the horizontal and vertical forces acting on the heel? Estimate his body mass (in kilograms) if you know that in general vertical ground reaction force found in running are about 4.8 times the value of body weight.
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