How much work does she do

Reference no: EM13331435

To develop muscle tone, a woman lifts a 4.00 kg mass held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. Ignore gravity.

(a) What is the angular acceleration if the mass is 24.0 cm from the elbow joint, her forearm having a moment of inertia of 0.250 kg·m2, and the muscle force being 650 N at an effective perpendicular lever arm of 1.80 cm?

rad/s2

(b) How much work does she do?

Reference no: EM13331435

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