In the figure, a 22 kg block is held in place via a pulley system. The person's upper arm is vertical; the forearm makes angle 0 = 33° with the horizontal. Forearm and hand together have a mass of 2.0 kg, with a center of mass at distance d₁ = 16 cm from the contact point of the forearm bone and the upper-arm bone (humerus). The triceps muscle pulls vertically upward on the forearm at distance d₂ = 2.6 cm behind that contact point. Distance d3 is 33 cm. Take the upward direction to be positive. What are the forces on the forearm from (a) the triceps muscle and (b) the humerus? Triceps com Humerus- d₁- (a) Number Units (b) Number Units Block

In the figure, a 22 kg block is held in place via a pulley system. The person's upper arm is vertical; the forearm makes angle 0 = 33° with the horizontal. Forearm and hand together have a mass of 2.0 kg, with a center of mass at distance d₁ = 16 cm from the contact point of the forearm bone and the upper-arm bone (humerus). The triceps muscle pulls vertically upward on the forearm at distance d₂ = 2.6 cm behind that contact point. Distance d3 is 33 cm. Take the upward direction to be positive. What are the forces on the forearm from (a) the triceps muscle and (b) the humerus? Triceps com Humerus- d₁- (a) Number Units (b) Number Units Block

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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To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to frictionless. The center of ladder is 2.00 m from the bottom. The person is standing 3.00 m from the bottom. Find the normal reaction and friction forces on the ladder at its base.
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To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to be frictionless. The center of mass of the ladder is 2 m from the bottom. The person is standing 3 m from the bottom. What are the magnitudes of the forces on the ladder at the top and bottom?
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