## Solution to Problem 252 Statically Indeterminate

**Problem 252**

The light rigid bar ABCD shown in Fig. P-252 is pinned at B and connected to two vertical rods. Assuming that the bar was initially horizontal and the rods stress-free, determine the stress in each rod after the load after the load P = 20 kips is applied.

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## Solution to Problem 251 Statically Indeterminate

**Problem 251**

The two vertical rods attached to the light rigid bar in Fig. P-251 are identical except for length. Before the load W was attached, the bar was horizontal and the rods were stress-free. Determine the load in each rod if W = 6600 lb.

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## Solution to Problem 250 Statically Indeterminate

**Problem 250**

In the assembly of the bronze tube and steel bolt shown in Fig. P-250, the pitch of the bolt thread is p = 1/32 in.; the cross-sectional area of the bronze tube is 1.5 in.^{2} and of steel bolt is 3/4 in.^{2} The nut is turned until there is a compressive stress of 4000 psi in the bronze tube. Find the stresses if the nut is given one additional turn. How many turns of the nut will reduce these stresses to zero? Use E_{br} = 12 × 10^{6} psi and E_{st} = 29 × 10^{6} psi.

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## Solution to Problem 249 Statically Indeterminate

**Problem 249**

There is a radial clearance of 0.05 mm when a steel tube is placed over an aluminum tube. The inside diameter of the aluminum tube is 120 mm, and the wall thickness of each tube is 2.5 mm. Compute the contact pressure and tangential stress in each tube when the aluminum tube is subjected to an internal pressure of 5.0 MPa.

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## Solution to Problem 248 Statically Indeterminate

**Problem 248**

Solve Problem 247 if the right wall yields 0.80 mm.

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## Solution to Problem 247 Statically Indeterminate

**Problem 247**

The composite bar in Fig. P-247 is stress-free before the axial loads P_{1} and P_{2} are applied. Assuming that the walls are rigid, calculate the stress in each material if P_{1} = 150 kN and P_{2} = 90 kN.

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## Solution to Problem 246 Statically Indeterminate

**Problem 246**

Referring to the composite bar in Problem 245, what maximum axial load P can be applied if the allowable stresses are 10 ksi for aluminum and 18 ksi for steel.

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## Solution to Problem 245 Statically Indeterminate

**Problem 245**

The composite bar in Fig. P-245 is firmly attached to unyielding supports. Compute the stress in each material caused by the application of the axial load P = 50 kips.

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## Solution to Problem 244 Statically Indeterminate

**Problem 244**

A homogeneous bar with a cross sectional area of 500 mm^{2} is attached to rigid supports. It carries the axial loads P_{1} = 25 kN and P_{2} = 50 kN, applied as shown in Fig. P-244. Determine the stress in segment BC. (Hint: Use the results of Prob. 243, and compute the reactions caused by P_{1} and P_{2} acting separately. Then use the principle of superposition to compute the reactions when both loads are applied.)

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## Solution to Problem 243 Statically Indeterminate

**Problem 243**

A homogeneous rod of constant cross section is attached to unyielding supports. It carries an axial load P applied as shown in Fig. P-243. Prove that the reactions are given by R_{1} = Pb/L and R_{2} = Pa/L.

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