Question: Consider the truss shown in ( Figure 1 ) . Each member has a cross - sectional area of A = 3 0 0 m

Consider the truss shown in

(

Figure

1) .

Each member has a cross

-

sectional area of

A = 300 m m^{2}, E = 200

GPa.

1 * = \frac{_{?}^{?}}{b} a r (A E)

Review

1 * =_{?}^{?} \frac{N A E}{n L}

1 * =_{?}^{?} N (\frac{d e l N}{d e l P}) \frac{A E}{L}

Previous Answers

Correct

Here we learn how to determine the correct virtual

-

work equation for displacement in trusses.

Figure

1

1

Determine the horizontal displacement of joint A measured leftward. Use the method of virtual work.

Express your answer to three significant figures and include the appropriate units. Enter positive value if the displacement is leftward and negativ value if the displacement is rightward.

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