Question Suppose the biceps were surgically reattached three centimeters farther
ID: 1416844 • Letter: Q
Question
Question Suppose the biceps were surgically reattached three centimeters farther toward the person's hand. If the same bowling ball were again held in the person's hand, how would the force required for the biceps be affected? Explain? (Select all that apply.)
It would require less force because the torque for each newton of force from the biceps is greater.
It would require more force because the force is less nearly perpendicular to the moment arm.
It would require more force because the force acts closer to the heavy bowling ball.
It would require more force because of the larger distance between the elbow and the location where the force from the biceps acts.
It would require less force because of the larger distance between the elbow and the location where the force from the biceps acts.
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F =? N
R =? N
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(a) Under these circumstances, what maximum weight would you attempt to lift?
?????????? N
(b) What force would your biceps apply while lifting this weight?
??????????????? N
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Use the values from PRACTICE IT to help you work this exercise. Suppose you wanted to limit the force acting on your joint to a maximum value of 8.44 102 N.
(a) Under these circumstances, what maximum weight would you attempt to lift?
?????????? N
(b) What force would your biceps apply while lifting this weight?
??????????????? N
Explanation / Answer
1) It would require more force because the force acts closer to the heavy bowling ball.
It would require more force because of the larger distance between the elbow and the location where the force from the biceps acts.
2) Here, 54.3 * 0.343 = F * 0.02950
=> F = 631.35 N
=> R = 631.35 - 54.3 = 577.05 N
3) Here, 844 * 0.02950 = W * 0.3725
=> maximum weight ,W = 66.84 N
=> force bisceps apply = 66.84 + 844 = 910.84 N
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