please answer The biceps brachii is the typical muscle we associate with forearm curls. The forearm pivots aboutthe elbow joint and the biceps muscle inserts along the radius (one of two major forearm bones),d₁ = 5 cm from the pivot. In our case, consider a forearm of length of d3 = 34 cm and weight ofW 3lbs, with a center of mass shifted toward the pivot, at d₂ = 15 cm from the elbow. There is areaction force R at the elbow joint not shown in the figure. As a first approximation, assume thebiceps muscle inserts at a 90 degree angle while the forearm is held parallel to the ground.Assume all quantities are correct to 2 significant figures.Md₂Wd3F a) If the person described above is holding a 24 lb object exerting a force F in static equilibrium, whatis known about the tension force M applied by the biceps brachii?b)calEnThe force is less than 24 lbs.The force is equal to 24 lbs.The force is greater than 24 lbs but less than 27 lbs.The force is equal to 27 lbs.The force is greater than 27 lbs.M =IOSe conditions of static equilibrium,rachii.c) Using the numerical values stated in the problem, your answer for (b), and the conditions of staticequilibrium, calculate the magnitude of the reaction force R in lbs, produced at the elbow joint.Enter to 2 significant figuresR =lbsd) In what direction is the reaction force that you calculated in part c?e) The forearm is lowered from horizontal. The biceps brachii now meets the radial arm at an angleof 60 degrees rather than 90 degrees. How does this effect the magnitude of the tension force Mcompared to the horizontal arm orientation?Hint: It might be helpful to refer to torque equilibrium for this case. What happens to the momentarm of all forces?

Ans Given Now draw the FBD of the forearm as Now net moment about point O is zero as Now take…

The biceps brachii is the typical muscle we associate with forearm curls. The forearm pivots about the elbow joint and the biceps muscle inserts along the radius (one of two major forearm bones), d₁ = 5 cm from the pivot. In our case, consider a forearm of length of d3 = 34 cm and weight of W = 3lbs, with a center of mass shifted toward the pivot, at d₂ = 15 cm from the elbow. There is a reaction force R at the elbow joint not shown in the figure. As a first approximation, assume the biceps muscle inserts at a 90 degree angle while the forearm is held parallel to the ground. Assume all quantities are correct to 2 significant figures.

The biceps brachii is the typical muscle we associate with forearm curls. The forearm pivots about the elbow joint and the biceps muscle inserts along the radius (one of two major forearm bones), d₁ = 5 cm from the pivot. In our case, consider a forearm of length of d3 = 34 cm and weight of W = 3lbs, with a center of mass shifted toward the pivot, at d₂ = 15 cm from the elbow. There is a reaction force R at the elbow joint not shown in the figure. As a first approximation, assume the biceps muscle inserts at a 90 degree angle while the forearm is held parallel to the ground. Assume all quantities are correct to 2 significant figures.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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