Engineering Mechanics: Statics
8th Edition
ISBN: 9781118807330
Author: James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher: WILEY
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Textbook Question
Chapter 2.4, Problem 50P
Elements of the lower arm are shown in the figure. The weight of the forearm is 5 lb with center of gravity at G. Determine the combined moment about the elbow pivot O of the weights of the forearm and the sphere. What must the biceps tension force be so that the overall moment about O is zero?
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Elements of the lower arm are shown in the figure. The weight of the forearm is 6.5 Ib with mass center at G. Determine the combined moment about the elbow pivot O of the weights of the forearm and the sphere. What must the biceps tension force be so that the overall moment about O is zero? The moment is positive if counterclockwise, negative if clockwise.
3) Elements of the lower arm are shown in the figure.
The weight of the forearm is 5 lb with mass center
at G. Determine the combined moment about the el-
bow pivot O of the weights of the forearm and the
sphere. What must the biceps tension force be so that
the overall moment about O is zero?
Ans. Mo
128.6 lb-in. CW, T 64.3 lb
6"
5 lb
8 lb
13
Elements of the lower arm are shown in the figure. The weight of the forearm is 6.3 lb with mass center at G. Determine the
combined moment about the elbow pivot O of the weights of the forearm and the sphere. What must the biceps tension force be so
that the overall moment about O is zero? The moment is positive if counterclockwise, negative if clockwise.
47°
6.3"
6.3 lb
9.5 lb
10.9th
Answers:
Mo =
i
Ib-in.
T =
Ib
Chapter 2 Solutions
Engineering Mechanics: Statics
Ch. 2.3 - The force F has a magnitude of 800 N. Express F as...Ch. 2.3 - The force F has a magnitude of 7 kN and acts at...Ch. 2.3 - The slope of the 6.5-kN force F is specified as...Ch. 2.3 - The force F has a magnitude of 1250 lb and has the...Ch. 2.3 - The control rod AP exerts a force F on the sector...Ch. 2.3 - Two forces are applied to the construction bracket...Ch. 2.3 - Two individuals are attempting to relocate a sofa...Ch. 2.3 - A small probe P is gently forced against the...Ch. 2.3 - The y-component of the force F which a person...Ch. 2.3 - Determine the x-y and n-t components of the 13-kip...
Ch. 2.3 - The two structural members, one of which is in...Ch. 2.3 - The guy cables AB and AC are attached to the top...Ch. 2.3 - If the equal tensions T in the pulley cable are...Ch. 2.3 - Two people exert the forces shown on the potted...Ch. 2.3 - A compressive force F is transmitted via the...Ch. 2.3 - A force F of magnitude 800 lb is applied to point...Ch. 2.3 - The two forces shown act in the x-y plane of the...Ch. 2.3 - Determine the x- and y-components of the tension T...Ch. 2.3 - Refer to the mechanism of the previous problem....Ch. 2.3 - Determine the magnitude Fs of the tensile spring...Ch. 2.3 - Determine the resultant R of the two forces...Ch. 2.3 - A sheet of an experimental composite is subjected...Ch. 2.3 - Determine the scalar components Ra and Rb of the...Ch. 2.3 - Determine the components Fa and Fb of the 4-kN...Ch. 2.3 - If the projection Pa and component Fb of the force...Ch. 2.3 - It is desired to remove the spike from the timber...Ch. 2.3 - At what angle must the 800-lb force be applied in...Ch. 2.3 - Power is to be transferred from the pinion A to...Ch. 2.3 - To insert the small cylindrical part into a...Ch. 2.3 - The unstretched length of the spring is r. 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