To develop muscle tone, a woman lifts a 2.00-kg weight held in her hand. She uses her
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To develop muscle tone, a woman lifts a 2.00-kg weight held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0o.
(a) What is the angular acceleration if the weight is 24.0 cm from the elbow joint, her forearm has a moment of inertia of 0.250 kg · m2, and the muscle force is 750 N at an effective perpendicular lever arm of 2.00 cm?
(b) How much work does she do?
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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