A slightly simplified view of the arm has the hinge at the elbow, the bicep attaching to the bone 2.50 cm from the ‘hinge’ and a mass supported in the hand 32.0 cm from the ‘hinge’. If the mass of the forearm is 2.60 kg and its center of mass is 12.0 cm from the ‘hinge’, how many Newtons of force from the bicep would be required to hold up a weight of 98.0 N?

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Chapter9: Statics And Torque
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6. A slightly simplified view of the arm has the hinge at the elbow, the bicep attaching to the bone 2.50
cm from the ‘hinge’ and a mass supported in the hand 32.0 cm from the ‘hinge’.
If the mass of the forearm is 2.60 kg and its center of mass is 12.0 cm from the
‘hinge’, how many Newtons of force from the bicep would be required to hold up
a weight of 98.0 N? 

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