While exercising in a fitness center, a man lies face down on a bench and lifts a weight with one lower leg by contractingthe muscles in the back of the upper leg. The weight has mass 13.5 kg, and is a distance of 28.0 cm from the knee joint. Themoment of inertia of the lower leg is 0.900 kg m², the muscle force is 1470 N, and its effective perpendicular lever arm is3.55 cm. Find the magnitude of the angular acceleration a of the weight.a =rad/s?Fow much work W is done if the leg rotates through an angle of 20.0° with a constant force exerted by the muscle?W =JI

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While exercising in a fitness center, a man lies face down on a bench and lifts a weight with one lower leg by contracting the muscles in the back of the upper leg. The weight has mass 13.5 kg, and is a distance of 28.0 cm from the knee joint. The moment of inertia of the lower leg is 0.900 kg m2, the muscle force is 1470 N, and its effective perpendicular lever arm is 3.55 cm. Find the magnitude of the angular acceleration a of the weight. a = rad/s2 Fow much work W is done if the leg rotates through an angle of 20.0° with a constant force exerted by the muscle? J W =

While exercising in a fitness center, a man lies face down on a bench and lifts a weight with one lower leg by contracting the muscles in the back of the upper leg. The weight has mass 13.5 kg, and is a distance of 28.0 cm from the knee joint. The moment of inertia of the lower leg is 0.900 kg m2, the muscle force is 1470 N, and its effective perpendicular lever arm is 3.55 cm. Find the magnitude of the angular acceleration a of the weight. a = rad/s2 Fow much work W is done if the leg rotates through an angle of 20.0° with a constant force exerted by the muscle? J W =

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

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