As your patient abducts her shoulder from 90 ° to 120 °, the moment arm decreases. If the torque from the deltoid remains constant, the force of the deltoid would ____________________ as the shoulder abducted
a. remain the same
b. increase
c. decrease
d. become 0 N
ANS: B
If the torque were to remain the same, the force would have to increase as the moment arm
decreases. Force and moment arm have an inverse relationship if torque is to remain constant.
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