Question Details: A) What is the force F in newtons? B) Find (the degrees below

Question

Question Details:
A) What is the force F in newtons?
B) Find (the degrees below thehorizontal) Question Details: A patient in therapy has a forearm thatweighs 24.5 andthat lifts a 111.0- weight.These two forces have direction vertically downward. The only othersignificant forces on his forearm come from the biceps muscle(which acts perpendicularly to the forearm) and the force at theelbow. If the biceps produces a pull of 232 whenthe forearm is raised 41 abovethe horizontal, find the magnitude and direction of the force thatthe elbow exerts on the forearm. (The sum of the elbow force andthe biceps force must balance the weight of the arm and the weightit is carrying, so their vector sum mustbe 135.5 ,upward.)
A) What is the force F in newtons?
B) Find (the degrees below thehorizontal)

Explanation / Answer

   now , f(e) elbow + f(b) biceps = f(a)arm    => f(e) = 135.5 -232 sin 41    we get force acted upon elbow.......so itis negative!!
  

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