Cole is attempting to lift 150 N. The moment arm of this weight about his elbow...
Cole is attempting to lift 150 N. The moment arm of this weight
about his elbow joint is 25 cm. The force generated by the elbow
flexor muscles is 2000 N. The moment arm of the elbow flexor
muscles is 2 cm. Is Cole able to lift the weight with this amount
of force in his flexor muscles?
Homework Answers
Moment of weight = 150 x 25 = 3750 N.cm
Moment of muscle force (presumeably the maximum she can attain!) = 2000 x 2 = 4000. So she should be able to do the lift with a small margin in reserve.
due to elow flexor = 2000*0.02=40Nm
due to weight = 150*0.25=37.5 Nm
he will be able to lift as applied moment of force is more
Moment of weight = 150 x 25 = 3750 N.cm
Moment of
muscle force
(presumeably the maximum she can attain!) = 2000 x 2 = 4000. So she
should be able to do the lift with a small margin in
reserve.
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