diagram of a hypothetical 40 cm long arm is shown in Figure 4.15.   For the purposes of answering this question assume that the arm itself is weightless. If the muscle attached to the arm can contract at a rate of 7.0 cm s−1 with a force of 15 000 N then: (a) What is the maximum angular velocity of the arm if the muscle is attached 1 cm from the elbow? (b) What is the maximum weight that can held in the hand if the muscle is attached 1 cm from the elbow? (c) What is the maximum angular velocity of the arm if the muscle

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter9: Statics And Torque
Section: Chapter Questions
Problem 18CQ: Suppose the biceps muscle was attached through tendons to the upper arm dose to the elbow and the...
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 A diagram of a hypothetical 40 cm long arm is shown in Figure 4.15.

 

For the purposes of answering this question assume that the arm itself is weightless. If the muscle attached to the arm can contract at a rate of 7.0 cm s−1 with a force of 15 000 N then:

(a) What is the maximum angular velocity of the arm if the muscle is attached 1 cm from the elbow?

(b) What is the maximum weight that can held in the hand if the muscle is attached 1 cm from the elbow?

(c) What is the maximum angular velocity of the arm if the muscle is attached 3 cm from the elbow? (

d) What is the maximum weight that can held in the hand if the muscle is attached 3 cm from the elbow

shoulder
upper
arm
elbow
x
muscle
contracts
lower
arm
Figure 4.15 A simplified diagram of a arm showing the
articulation of the lower arm by the biceps muscle.
Transcribed Image Text:shoulder upper arm elbow x muscle contracts lower arm Figure 4.15 A simplified diagram of a arm showing the articulation of the lower arm by the biceps muscle.
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