The 194-lb exerciser is beginning to execute a bicep curl. When in the position shown with his right elbow fixed, he causes the 20-lb cylinder to accelerate upward at the rate 0.16g. Neglect the effects of the mass of his lower arm and estimate the normal reaction forces at A and B. Friction is sufficient to prevent slipping. A B 12" 12" 15" 54" PART 2 Calculate the normal reaction forces at A and B. Answers: NA= NB= lb lb 18° 20 lb

The 194-lb exerciser is beginning to execute a bicep curl. When in the position shown with his right elbow fixed, he causes the 20-lb cylinder to accelerate upward at the rate 0.16g. Neglect the effects of the mass of his lower arm and estimate the normal reaction forces at A and B. Friction is sufficient to prevent slipping. A B 12" 12" 15" 54" PART 2 Calculate the normal reaction forces at A and B. Answers: NA= NB= lb lb 18° 20 lb

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

The 194-lb exerciser is beginning to execute a bicep curl. When in the position shown with his right elbow fixed, he
causes the 20-lb cylinder to accelerate upward at the rate 0.16g. Neglect the effects of the mass of his lower arm and
estimate the normal reaction forces at A and B. Friction is sufficient to prevent slipping.
B
12" 12" 15"
54"
18°
PART 2
Calculate the normal reaction forces at A and B.
Answers:
NA=
NB =
lb
lb
20 lb

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