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Problem 4. Chapter 4, Problem 4. Textbook Problem. To determine. Explanation of Solution. Given information: Steps to follow in the equilibrium analysis of a body are: 1. Draw the free body diagram. Write the equilibrium equations. Solve the equations for the unknowns. Write equilibrium equation in horizontal direction. Still sussing out bartleby? Check out a sample textbook solution.

**6-48 Determine the forces in members of the truss, and state if they are in tension or compression.**

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Get Started. It is resting onThis method is used for evaluating internal forces in limited number of members due to certain external loading on the truss. The considered section in this method must not pass through more than three members since the degree of determinancy will reduce.

Thus the members BD and CD are in compression since there appears a negative sign in their magnitude. Try it risk-free for 30 days. I love the way expert tutors clearly explains the answers to my homework questions. Keep up the good work! Log in. Sign Up. Explore over 4, video courses. Find a degree that fits your goals. I Method Of sections : This method is used for evaluating internal forces in limited number of members due to certain external loading on the truss.

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### Determine the force in the members BD and CD of the truss shown.

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Computer Engineering. Computer Science. Electrical Engineering. Mechanical Engineering. Advanced Math. Advanced Physics. Earth Science. Social Science. International Editionengineerin Chapter Questions. Problem 4. Chapter 4, Problem 4. Textbook Problem. To determine. Explanation of Solution. Given information: Steps to follow in the equilibrium analysis of a body are: 1.

Draw the free body diagram. Write the equilibrium equations. Solve the equations for the unknowns. Write equilibrium equation in horizontal direction. Still sussing out bartleby?Determine the force in members CD of the truss, and state if the member is in tension or compression.

Figure 1 Express your answer to three significant figures and include the appropriate units. Assume positive scalars for members in tension and negative scalars for members in compression. Determine the force in members HI of the truss, and state if the member is in tension or compression. Express your answer to three significant figures and include the appropriate units.

Determine the force in members CJ of the truss, and state if the member is in tension or compression.

This method is particularly convenient when the forces in a few members of a truss are required to be found out. In this method, a section line is passed through the member or members, in which the forces are required to be found out as shown below.

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## Part A Determine the force in members CD of the truss, and state if the member is in tension or...

Sign Up. Explore over 4, video courses. Find a degree that fits your goals. Question: Part A Determine the force in members CD of the truss, and state if the member is in tension or compression.

Answer and Explanation: Draw a free body diagram of the truss showing reactions at A and K. Part A Apply the method of sections for the given truss. See full answer below. Ask a question Our experts can answer your tough homework and study questions.

Ask a question Ask a question. Search Answers. Learn more about this topic:. Try it risk-free. What is a Plinth in Architecture?Determine the force developed in members FE, EB, and BC of the truss and state if these members are in tension or compression.

Apply the method of section and draw the free body diagram of the right-hand portion of the truss at section a-a. Questions are typically answered within 1 hour. Q: Problems through Figures P through P5— show completed bending moment diagrams fo A: The given bending moment diagram is shown below Q: This is a dynamics question. Q: Block A has a weight of 60 lb and block B has a weight of 10 lb. Neglect friction and the mass of th Q: Two smooth disks A and B each have a mass of 0.

Both disks are moving with the velocities shown A: Take Rx and Ry as the horizontal and vertical reaction forces at the pin joint A. Also, take Ri as t Q: Q: Determine the force required to punch a slug hav- ing the shape shown in Figure P from a shee Q: For some reason 0. Subscribe Sign in. Operations Management. Chemical Engineering.

Civil Engineering. Computer Engineering. Computer Science. Electrical Engineering.Using the method of consistent deformations, determine the vertical and horizontal reactions at A and E and the resulting member loads for the truss in the accompanying figure.

Figure 1 - Truss structure to analyze. To solve for the single degree of indeterminacy, the structure has to be reduced to a statically determinate and stable structure.

This is done by removing a redundant support. In this example, the horizontal reaction at support E is selected as a redundant to remove in order to obtain a primary determinate structure.

Figure 2 - Primary determinate structure. Calculate the support reactions of the primary structure, then determine the individual member forces by using either the method of sections, or the method of joints. Figure 3 - Support reactions and member forces. Use the virtual work methodcalculate the horizontal translation of support E that corresponds to the removed redundant X E. Remove all loads and apply a unit force in the direction of the redundant. Figure 4 - Primary structure with unit load applied.

Figure 5 - Member forces due to unit load. Since the horizontal translation at E is equal to zero in the original structure, the horizontal translation of the released structure at support E must be countered by a force at E which causes an equal translation in the opposite direction. Since the member forces are known in the released structure, and the virtual structure with a unit load applied at E, the deflection at support E E0 caused by the applied loads on the released structure is determined by the following equation.

The force required to counter this deflection is found by determining the deflection caused by a unit load in the positive direction at the removed support, and multiplying this answer by the unknown support reaction.

The consistent deformation euqation that correspondes to the redundant X E the horizontal reaction at support E is:. The deflection of the released structure under applied loads, E0.

Multiply the unit load by this value to get the final reaction. The positive answer indicates that the reaction is in the direction of the applied unit load. Impose the value of the calculated X E along with the other applied loads on the original truss.

Figure 6 - Truss with resultant support reactions. The resulting member forces are now determined by using the method of sections, or method of joints.

However, a much easier method is to use superposition and add the effects caused by the redundant load on the released structure. In this example, the 35 k load will cause only the top chord of the truss to experience a 35 k tensile load in each member. This result can be added to those found in figure 3 above. The final results. Figure 8 - Truss with final member forces.

## Determine the force in the members BD and CD of the truss shown.

Contact Dr. Fouad Fanous for more information.If we make a vertical cut through the midpoints of GH, HC, and BC and replace the members with their internal forces, the right side of the truss will still be in static equilibrium. We may then take moments about C to zero. The forces Fhc, Fbc, and the 8 kN load all have zero moment arm, which leaves Fhg as the only unknown which I will assume is in compression. Again, If we make a vertical cut through the midpoints of GH, HC, and BC and replace the members with their internal forces, the right side of the truss will still be in static equilibrium.

We may then take moments about G to zero. The forces Fgh, Fgc, and the 8 kN load all have zero moment arm, which leaves Fhc as the only unknown which I will assume is in tension. As a form of exchange, please remember to vote a "Best Answer" from among your results. This is not the same as "like" or "thumbs up" which are also nice and do boost points, but only after asker awards initial points with their vote. Answer Save. Whome Lv 7. Favorite Answer. The vertical component of Fhg also has no moment arm.

The vertical component of Fhc also has no moment arm about G. Determine The Force In Members. Still have questions? Get your answers by asking now.

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