What increases when a muscle like a biceps is extended?

What increases when a muscle like a biceps is extended?

  • Correct Answer: force
  • momentum
  • weight
  • speed

Explanation: In the above example of the biceps muscle, the angle between the forearm and upper arm is 90°. If this angle changes, the force exerted by the biceps muscle also changes. In addition, the length of the biceps muscle changes. The force the biceps muscle can exert depends upon its length; it is smaller when it is shorter than when it is stretched. Very large forces are also created in the joints. In the previous example, the downward force.

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