Estimate the force that the back muscle exerts on the backbone while lifting a 40 Ib package incorrectly. Basic information and model: > Length of backbone: 0.60 m > Back muscle attaches 2/3 of the way from the bottom at an angle of 12° above the horizontal backbone. > Weight of upper body is 60% of the total weight of the body of 120 lb (72 lb), centered at the middle of the backbone. > Pivot is the bottom of the lower back, where it contacts the sacrum.

Q: Figure E11.8 11.8 A 60.0-cm, uniform, 50.0-N shelf is supported horizontally by two vertical wires…

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A: The Diagram for the given Question is:

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Q: One end of a unform 340-m-long rod of weight F is supported by a cable at an angle ofe37 with the…

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Q: 2.15 A large wood beam weighing 800 N is supported by two posts as shown. If an unthinking man…

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Q: A uniform, 100-N pipe is used as lever, as shown. Where must the fulcrum ( the support point) be…

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Q: Two people carry a heavy electric motor by placing it on a light board 2.00 m in length. One person…

A: The figure below depicts the given situation.

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Q: Even when the head is held erect, as in Figure shown, its center of mass is not directly over the…

A: a) Using the torque balance equation,

Q: ent Attempt in Progress me drawing shows a uniform horizontal beam attached to a vertical wall by a…

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Q: Approximately what magnitude force, FM, must the extensor muscle in the upper arm exert on the lower…

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Q: A person is standing on a section of uniform scatfolding as shown in the figure. The section of…

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Q: ould therefore exert a force to keep the head erect. That is why your head falls forward when you…

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Q: 42. A 12.0-m boom, AB, of a crane lifting a 3000-kg load is shown below. The center of mass of the…

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Q: 3) A 560 Ibs uniform pipe is being functioned as a lever as shown in the figure below. A fulcrum…

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Q: 3) A 560 lbs uniform pipe is being functioned as a lever as shown in the figure below. A fulcrum…

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Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: The 455-kg uniform I-beam supports the load shown. Determine the reactions at the supports. -8.7 m-…

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Q: A uniform beam of length L and mass mB is supported by two pillars located L/3 from either end, as…

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Q: A man holds a 153-N ball in his hand, with the forearm horizontal (see the figure). He can support…

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Q: y T T F = 100N An object is subjected to three forces as shown in the figure. Assume 0 = 25.2 °,…

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Q: In exercise physiology studies, it is sometimes important to determine the location of a person's…

A: Fg1=380 NFg2=260 NDistance between scales=2 mW=Total weight

Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

A: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

Q: A schoolyard teeter-totter with a total length of 6.1 m and a mass of 41 kg is pivoted at its…

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.