- #1
tristanmagnum
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Homework Statement
The Achilles tendon is attached to the rear of the foot as shown in (Figure 1) . A person elevates himself just barely off the floor on the "ball of one foot." Assume the person has a mass of 80kg and D is twice as long as d.
a:Find the tension FT in the Achilles tendon (pulling upward).
b:Find the (downward) force FB exerted by the lower leg bone on the foot.
http://session.masteringphysics.com/problemAsset/1706786/4/GIANCOLI.ch09.p34.jpg
Homework Equations
FB + FT -m*g = 0 [Force Equilibrium]
FB*D + FT*(D+d) = 0 [Moment Equilibrium]
i think
The Attempt at a Solution
not sure what to do because there doesn't seem to be enough info.