B. options are elbowtip of the finger any position different from the elbow on the forearm The figure shows the forearm of a person holding a book. The biceps exert a force FB to support theweight of the forearm and the book. The triceps are assumed to be relaxed. The lower panel, is anapproximately equivalent mechanical system with the pivot at the elbow joint.There are four forces acting on the forearm and its load (the system of interest). The magnitude ofthe force of the biceps is FB; that of the elbow joint is FE; that of the weights of the forearm is wa, andits load is Wb. Two of these are unknown( FB and FÉ). Solve for FB after answering the questionsbelow.TricepsmuscleFE4.0cm1₁16 cmFB12Bicepsmusclem₂ = 2.5 kgCGWa38 cmCGWa13(a)(b)PHYSICSm₂ = 4.0 kgCGW₂CGW₂Free-bodydiagramWaFBWb (a) From figure (b), pick the first condition of equilibrium from below:A. FB +FE+ Wa - Wb = 0B. FB - FE - W₂ - Wb = 0C. FB-FE-Wa+Wb = 0D. FB-FE+Wa+Wb = 0First condition of equilibrium is(b) What point should you calculate the torque in order to get rid of the second unknown FE.(c) From figure (b), pick the second condition of equilibrium from below:A. r₁ FB +r₁ FE + r₂ Wa - 13 Wb = 0B. ₁ FB + r₂ Wa +r3 Wb = 0C. r₁FB - r₂ Wa + r3 W₁ = 0D. r₁ FB2 War3 Wb=0Second condition of equilibrium is-(d) Solve for FB.Enter to 2 significant figuresFB =N(e) Compare the FB to the combined weights it supports.Enter to 2 significant figuresThe force in the biceps isFBWa+Wb=times larger than the weights it supports.

Question

B. options are elbowtip of the finger any position different from the elbow on the forearm The figure shows the forearm of a person holding a book. The biceps exert a force FB to support theweight of the forearm and the book. The triceps are assumed to be relaxed. The lower panel, is anapproximately equivalent mechanical system with the pivot at the elbow joint.There are four forces acting on the forearm and its load (the system of interest). The magnitude ofthe force of the biceps is FB; that of the elbow joint is FE; that of the weights of the forearm is wa, andits load is Wb. Two of these are unknown( FB and FÉ). Solve for FB after answering the questionsbelow.TricepsmuscleFE4.0cm1₁16 cmFB12Bicepsmusclem₂ = 2.5 kgCGWa38 cmCGWa13(a)(b)PHYSICSm₂ = 4.0 kgCGW₂CGW₂Free-bodydiagramWaFBWb (a) From figure (b), pick the first condition of equilibrium from below:A. FB +FE+ Wa - Wb = 0B. FB - FE - W₂ - Wb = 0C. FB-FE-Wa+Wb = 0D. FB-FE+Wa+Wb = 0First condition of equilibrium is(b) What point should you calculate the torque in order to get rid of the second unknown FE.(c) From figure (b), pick the second condition of equilibrium from below:A. r₁ FB +r₁ FE + r₂ Wa - 13 Wb = 0B. ₁ FB + r₂ Wa +r3 Wb = 0C. r₁FB - r₂ Wa + r3 W₁ = 0D. r₁ FB2 War3 Wb=0Second condition of equilibrium is-(d) Solve for FB.Enter to 2 significant figuresFB =N(e) Compare the FB to the combined weights it supports.Enter to 2 significant figuresThe force in the biceps isFBWa+Wb=times larger than the weights it supports.

Accepted Answer

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