A man is holding a 3.6-kg sphere in his hand with the entire arm held horizontally as shown in the figure. tensile force in the deltoid muscle prevents the arm from rotating about the shoulder joint O; this force acts at the angle shown. Determine the force exerted by the deltoid muscle on the upper arm at A and the x- and y-components of the force reaction at the shoulder joint O. The mass of the upper arm is (m,=1.9 kg), the mass of the lower arm is (m=1.1 kg), and the mass of the hand is (m;=0.4 kg); all the corresponding weights act at the locations shown in the figure. x= 6 mm y 3.6(9.81) N Deltoid muscle Fp 21° 'Wy (WH 125 mm 130 mm 412 mm (635+x) mm

A man is holding a 3.6-kg sphere in his hand with the entire arm held horizontally as shown in the figure. tensile force in the deltoid muscle prevents the arm from rotating about the shoulder joint O; this force acts at the angle shown. Determine the force exerted by the deltoid muscle on the upper arm at A and the x- and y-components of the force reaction at the shoulder joint O. The mass of the upper arm is (m,=1.9 kg), the mass of the lower arm is (m=1.1 kg), and the mass of the hand is (m;=0.4 kg); all the corresponding weights act at the locations shown in the figure. x= 6 mm y 3.6(9.81) N Deltoid muscle Fp 21° 'Wy (WH 125 mm 130 mm 412 mm (635+x) mm

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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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

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Q2-A man is holding a 3.6-kg sphere in his hand with the entire arm held horizontally as shown
in the figure. tensile force in the deltoid muscle prevents the arm from rotating about the
shoulder joint O; this force acts at the angle shown. Determine the force exerted by the
deltoid muscle on the upper arm at A and the x- and y-components of the force reaction at
the shoulder joint O. The mass of the upper arm is (m,=1.9 kg), the mass of the lower arm is
(m-1.1 kg) , and the mass of the hand is (my=0.4 kg); all the corresponding weights act at
the locations shown in the figure.
X= 6 mm
3.6(9.81) N
Deltoid muscle
FD
21°
'Wy
125 mm
WL
WH
130 mm
412 mm
(635+x) mm

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