The lumbar portion of the human spine supports the entire weight of the upper torso and the force load imposed on it. We consider here the disk (shaded red) between the lowest vertebra of the lumbar region (L) and the uppermost vertebra of the sacrum re- gion. (a) For the case L = 0, determine the com- pressive force C and the shear force S supported by this disk in terms of the body weight W. The weight W, of the upper torso (above the disk in question) is 68% of the total body weight W and acts at G1. The vertical force F which the rectus muscles of the back exert on the upper torso acts as shown in the figure. (b) Repeat for the case when the person holds a weight of magnitude L = W/3 as shown. State any assumptions.

The lumbar portion of the human spine supports the entire weight of the upper torso and the force load imposed on it. We consider here the disk (shaded red) between the lowest vertebra of the lumbar region (L) and the uppermost vertebra of the sacrum re- gion. (a) For the case L = 0, determine the com- pressive force C and the shear force S supported by this disk in terms of the body weight W. The weight W, of the upper torso (above the disk in question) is 68% of the total body weight W and acts at G1. The vertical force F which the rectus muscles of the back exert on the upper torso acts as shown in the figure. (b) Repeat for the case when the person holds a weight of magnitude L = W/3 as shown. State any assumptions.

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

See similar textbooks

Related questions

Q: The front view of a Zenith CH 750 Cruzer airplane named "Mapanikwa" is shown in the figure below.…

A: The solution of above question can be easily obtained by the use of 3 static equations as given…

Q: The lumbar portion of the human spine supports the entire weight of the upper torso and the force…

A: Make the FBD for the given question.

Q: A point mnass of 100 kg is dropped onto massless elastic bar (cross-sectional area = 1 %3D mm2,…

A: Given:mass, m=100 kgcross-sectional area, A=100 mm2length, l=1mE=100 GPag=10 m/s2

Q: 4.15 The 180-kg uniform boom ABC, supported by a horizontal cable at B and a pin at A, carries a…

A: As per the free body diagram given: Take the equilibrium of moment about point A: Consider all the…

Q: The bent rod in Fig. a is supported at A by a journal bearing, at D by a ball-and-socket joint, and…

A: Given data: Mass of the cylinder (m) = 100 kg Need to determine the tension in cable.

Q: 40 lb 30 lb 60 lb 12 16"- 60 16 30 lb 247. The three-step pulley shown in Fig. P-247 is nulijeeted…

Q: 1. For the one-dimensional 3 truss-element system shown, determine the nodal displacements and…

Q: The mechanism in the figure below is designed to maintain the horizontal position of the load while…

A: Given values a=34cm, b=68cm, c=20cm, r=93cm, m=110kg Given figure

Q: Two identical rollers, each of weight W = 100 lbf, are supported by an inclined plane and vertical…

A: Given; W=100 lbf Angle θ=30° To Find, RA,RB and RC

Q: Consider the force P applied at point A on the plate of the figure shown (image 1). Assuming that…

A: Consider the free body diagram shown below for the plate with the resolved forces.

Q: Fig.Q4 shows an overhead lift device. If a 2500N force is suspended from the top boom while the…

Q: Consider the force P applied at point A on the plate of the figure shown (image 1). Assuming that…

A: Given data: Force P=332N Both the options as mentioned above are similar, however the correct…

Q: 4.) In the figure below, two cylinders, A of weight 400LB and B of weight 200LB, rest on smooth…

Q: The uniform bar with end rollers weighs 65 Ib and is supported by the horizontal and vertical…

Q: The figure shows the cross section AB of a garage door which is a rectangular 2.5-m by 5-m panel of…

A: Determine the change in gravitational potential energy by using the below expression.

Q: The lawn mower shown in Fig. P6-59 weighs 35 lb. Determine the force P required to move the mower at…

A: According to the given information, we have a weight of 35lb where we also have an inclined angle…

Q: m

A: Given data: The mass of the sphere is m = 1 kgThe radius of the sphere is R = 0.5 mThe height of the…

Q: Ex : Body A in fig below (a) weighs 200 lb and the homageneus bar B weighs 40 Ib. Draw afree-body…

Q: nonuniform beam 4.50 m long and weighing 1.40 kNmakes an angle of 25.0° below the horizontal. It is…

A: Given Data Length of the beam, L=4.50m The weight of the beam, W=1.40KN Beam makes the angle with…

Q: Example (Revision) The jib crane shown in Fig. 4-45a is subjected to three coplanar forces. Replace…

Q: The quadriceps tendon attaches to the tibia at a 30°angle 4 cm from the joint center at the knee.…

Q: A uniform beam ( weight 71 N, length 6m) is being supported by cable and a hinge on a wall. The…

Q: A 7-ft boom is held by a ball and socket at A and by two cables EBFand DC; cable EBFpasses around a…

A: Given: The length of boom, L = 7 ft The force acting at C, P = 390 lb

Q: Consider the force P applied at point A on the plate of the figure shown (image 1). Assuming that…

A: Draw the free body diagram of the plate for case first.

Q: 3-In the scheme below, 4 objects are hanging from each of the rings and 5 ropes (blue) keep the…

A: Given : m1 = 30 kg α = 600 ,β = 300, gamma =700 Tension in five ropes are T1 ,T2 ,T3 ,T4 and T5

Q: Determine the force in the cable OC and the elongation of the spring OA, OB necessary to support a…

A: The mass hang on the cable is given as, m=400 kg The length of the cable are given as, a=4 m b=5 m…

Q: 1. The cylinder of weight, W (see the table of values), shown below is being hoisted up with the…

Q: A bridge of length 50.0 m and mass 7.60 of mass 3.30 x 104 kg is located 15.0 m from one end. What…

Q: 3/60 The lumbar portion of the human spine supports the entire weight of the upper torso and the…

Q: The homogeneous 25-kg bar AB is supported by a ball-and-socket joint at A. End B, which leans…

Q: A truck bed cargo shell has a rectangular glass window that is held up by two strut pistons. Assume…

Q: Example -2: Determine the tension in cables BA and BC necessary to support the 60-kg cylinder. smg…

Q: A person's arm is used for ergonomic studies. If the distance of the AB, BC, and CD segments are…

A: The loading diagram of the given ergonomics study considered is as shown below: Find the…

Q: Find the support reacions and joint force of the construction shown on the figure, if; P=12 kN q=9…

A: Given:- P=12 kN q=9 kN/m M=12 kN L=2 m To find:- Support reaction forces Joint force

Q: In the figure, a uniform square sign with mass m and edge length L, is hung from a horizontal rod of…

Q: El mecanismo mostrado consiste en una manivela (barra AB), una biela (barra BC) y el pistón C que se…

Q: A right circular roller of weight W rests on a smooth horizontal plane and is held in position by…

A: Data given-

Q: 1. A circular opening 4 ft. in diameter is closed by a hemispherical shell weighing 2,800 lb. A.…

Q: The lumbar portion of the human spine supports the entire weight of the upper torso and the force…

Q: In the simple cage system in the figure, which of the following is the absolute value of the force…

Q: The bent rod in Fig. a is supported at A by a journal bearing, at D by a ball-and-socket joint, and…

A: Tension in BC needs to be calculated

Q: 3.] The uniform boom shown below weighs 3000 N. It is supported by the horizontal guy wire and by…

A: Given data as per question weight of boom =3000 N considering FBD of the system According to…

Q: 3. A block with a mass of 160-kg is supported EDI by a cable which passes over a 150-mm diameter…

Q: A schematic of a homemade hydraulic jack is shown in the figure below, with cylindrical tube ends of…

Q: A ladder AB is leaning against a smooth vertical wall at A and is resting on a horizontal floor at…

Q: Develop the stiffness matrices for each of the three members of the frame Q2, with the product AE =…

Q: A uniform ladder, 4.8 m long and weighing 220 N, rests against a smooth vertical wall. By taking…

Concept explainers

Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.

Question

The lumbar portion of the human spine supports the
entire weight of the upper torso and the force load
imposed on it. We consider here the disk (shaded red)
between the lowest vertebra of the lumbar region
(L5) and the uppermost vertebra of the sacrum re-
gion. (a) For the case L = 0, determine the com-
pressive force C and the shear force S supported by
this disk in terms of the body weight W. The weight
W. of the upper torso (above the disk in question) is
68% of the total body weight W and acts at Gj. The
vertical force F which the rectus muscles of the back
25 mm
L3
L4
L5
G2
4r
exert on the upper torso acts as shown in the figure.
(b) Repeat for the case when the person holds a
weight of magnitude L
assumptions.
W/3 as shown. State any
Sacrum
%3D
300 mm
50 mm
3王

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Trending now

This is a popular solution!

Step by step

Solved in 9 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The lumbar portion of the human spine supports the entire weight of the upper torso and the force load imposed on it. We consider here the disk (shaded red) between the lowest vertebra of the lumbar region (L5) and the uppermost vertebra of the sacrum re- gion. (a) For the case L 0, determine the com- pressive force C and the shear force S supported by this disk in terms of the body weight W. The weight W, of the upper torso (above the disk in question) is 68% of the total body weight W and acts at G,. The vertical force F which the rectus muscles of the back 25 mm G1 W L3 L4 L5 G2 4r exert on the upper torso acts as shown in the figure. (b) Repeat for the case when the person holds a weight of magnitude L W/3 as shown. State any assumptions. F Sacrum 300 mm \50 mm
The wheels, axle, and handles of a wheelbarrow W=62N. The load chamber and its contents weigh Wl=575N. The drawing chose leave to Forsyth and different wheelbarrow designs to support the wheelbarrow and equilibrium the man's hands apply a force to the handles that is directly vertically upward. consider the rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the Man's force for both designs
The wheels, axle, and handles of a wheelbarrow weigh W = 55 N. The load chamber and its contents weigh WL = 623 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the man’s force for both designs.
3/60 The lumbar portion of the human spine supports the entire weight of the upper torso and the force load imposed on it. We consider here the disk (shaded red) between the lowest vertebra of the lumbar region (L) and the uppermost vertebra of the sacrum re- gion. (a) For the case L = 0, determine the com- pressive force C and the shear force S supported by this disk in terms of the body weight W. The weight W of the upper torso (above the disk in question) is 68% of the total body weight W and acts at G. The vertical force F which the rectus muscles of the back 25 mm G1 "M La LA L5 G2 exert on the upper torso acts as shown in the figure. (b) Repeat for the case when the person holds a weight of magnitude L W/3 as shown. State any assumptions. Sacrum 300 mm 50 mm
For the same question, the Driving force (pressing force) of the Nut will be measured with the Torque wrench. While tightening the nut, the contact surface rubs against the fixed surfaces. Accordingly, how much MOMENT do we need to read from the Torque wrench in order to create a force of Fçak=1101 kgf? (Given: Screw pitch M30, Root diameter d1=25.8 mm) Outer diameter of the friction surface under the nut D42 mmFriction coefficient μ=0.6
hi please draw the fbd of the given condition , mention all forces acting on the two blocks in 2 different fbd , show all the forces clealy . i will rate if its a clear solution which can be easily understood
is formed in a quar- C6-67 The lever shown in Fig. ter circular arc of radius 20 in. Plot A and B, the magnitude of the pin force at A and the force on the smooth support B, as a function of e (0° s 0s 85°), the angle at which the support is located. 125 lb B A 20 in.
The figure shows the Russel fracture traction device and a mechanical model of the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The combined weight of the leg and cast is W=180 N. The horizontal distance between points A and B where the cables are attached to the leg is L=100 cm and the vertical distance is d=5 cm. Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A (3L/4= 75 cm). The angle that cable 2 makes with the horizontal is measured as β=30°. Accordingly, in order for the leg to remain in balance in the shown position; a) Find the tensile force T1 in cable 1. (Write your result in N) Answerb) Find the tensile force T2 in cable 2. (Write your result in N) Answerc) Find the angle α of cable 1 with the horizontal. Response
For the spring assemblage shown below, determine the displacement at node 2 and the forces in each spring element. Also determine the force F3. Given: Node 3 displaces an amount 8 = 12.5 mm in the positive x direction because of the force F3 and k1 k2 175 kN/m.
SAMPLE PROBLEM 2/2 Combine the two forces P and T, which act on the fixed structure at B, into a single equivalent force R. P = 800 lb T = 600 lb 6' tor addit of 1 C/60° D| racy. Note t 3' 40.9 B 800 lb
The next sulected to the system of forces as shown in the following que The russ is supported ty a plis et A and a role at BF 600 N the force in mwenber(D) is equal to Zm O 000N to Ob 600 N Compren O 720 N-compression O5758N-compon
واجبات ميكانيك .pdf 2- Resolve The Sool force -fg into twe Components : a Shearing Com ponoul Paraller to AB and anor mal component Pn pondiculay 1o AB 2/8 The y-component of the force F which a person exerts on the handle of the box wrench is known to be 70 lb. De- termine the x-component and the magnitude of F. F 12 PROBLEM 2/8 2/9 Determine the x-y and n-t components of the 13-kip force F acting on the simply-supported beam. F = 13 kips y 40° B 15' 25' C 15° PROBLEM 2/9