tan The Achilles tendon is attached to the rear of the foot as shown in (Figure

Question

tan 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 82 kg and D is twice as long as d. Part A Find the tension Fr in the Achilles tendon (pulling upward) Express your answer to two significant figures and include the appropriate units Figure 1 of 1 xX Leg bone Achilles tendon TValue Ball of foot SubmitPrev Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

Explanation / Answer

A.

nowtaking the moments about force Fb

Net moment= 0

Fn*2d - Fa*d = 0
Fa = 2Fn
=2*mg
= 2*82*9.8
=1607.2 N

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B.

now taking the moments about force Fathen

M=0

Fb*d - Fn*3d = 0
Fb = 3Fn
=3*mg
= 3*82*9.8

= 2410.8 N

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comment in case any doubt..giokuck

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