b) The figure below changes the previous model of the arm by showing that the muscles attach tothe upper arm, at a height h = 20 cm the elbow. The muscle attachment lengths on the forearm arethe same as before: d₁ = 3 cm, d₂ = 15 cm, and da = 34 cm. However, d, and d₂ are no longer themoment arm lengths, since the forces are not perpendicular to the arm.M₁M₂d₂d₂WCalculate the new ratio of the mechanical advantage of the brachioradialis to the mechanicaladvantage of the biceps.Hint: When using the general formula to calculate the torque, you need the sine of the angle betweenvector representing where the force is applied from the pivot and tension. Recall the definition ofsine when it comes to triangles.Ratio of Mechanical Advantage (MA2MA₁) =I

Given:- We know that the charges in the previous model of the arm by showing that the muscles…

b) The figure below changes the previous model of the arm by showing that the muscles attach to the upper arm, at a height h = 20 cm the elbow. The muscle attachment lengths on the forearm are the same as before: d₁ = 3 cm, d₂ = 15 cm, and d3 34 cm. However, d, and d₂ are no longer the moment arm lengths, since the forces are not perpendicular to the arm. = M₁ M₂ d₂ di W

b) The figure below changes the previous model of the arm by showing that the muscles attach to the upper arm, at a height h = 20 cm the elbow. The muscle attachment lengths on the forearm are the same as before: d₁ = 3 cm, d₂ = 15 cm, and d3 34 cm. However, d, and d₂ are no longer the moment arm lengths, since the forces are not perpendicular to the arm. = M₁ M₂ d₂ di W

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

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.

Question

b) The figure below changes the previous model of the arm by showing that the muscles attach to
the upper arm, at a height h = 20 cm the elbow. The muscle attachment lengths on the forearm are
the same as before: d₁ = 3 cm, d₂ = 15 cm, and da = 34 cm. However, d, and d₂ are no longer the
moment arm lengths, since the forces are not perpendicular to the arm.
M₁
M₂
d₂
d₂
W
Calculate the new ratio of the mechanical advantage of the brachioradialis to the mechanical
advantage of the biceps.
Hint: When using the general formula to calculate the torque, you need the sine of the angle between
vector representing where the force is applied from the pivot and tension. Recall the definition of
sine when it comes to triangles.
Ratio of Mechanical Advantage (
MA2
MA₁
) =
I

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