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Question:


Answer:


Step 1

The free body diagram of the section ADEB is,

Mechanical Engineering homework question answer, step 1, image 1

Here, P is the effective loading due to the UDL. H and V are the subscript for the horizontal and vertical reaction at A respectively.

Step 2

Calculate the value of effective loading due to the UDL, P,

Mechanical Engineering homework question answer, step 2, image 1

Consider the angle B as θ and apply the condition for the equilibrium of moment about support A.

Mechanical Engineering homework question answer, step 2, image 2

Step 3

Apply the condition for the equilibrium of forces along the vertical direction.

Mechanical Engineering homework question answer, step 3, image 1

Step 4

Similarly, apply the condition for the equilibrium of forces along the horizontal direction.

Mechanical Engineering homework question answer, step 4, image 1

Step 5

Consider the FBD of the section AD of the beam,

Mechanical Engineering homework question answer, step 5, image 1

Calculate the effective load due to UDL, PAD  acting on AD,

Mechanical Engineering homework question answer, step 5, image 2

Step 6

Apply the condition for the equilibrium of forces along the vertical direction for the section AD.

Mechanical Engineering homework question answer, step 6, image 1

This the vertical reaction at point D.

Step 7

Apply the condition for the equilibrium of forces along the horizontal direction for the section AD.

Mechanical Engineering homework question answer, step 7, image 1

This the horizontal reaction at point D.

Step 8

Now, apply the condition for the equilibrium of moment about point D.

Mechanical Engineering homework question answer, step 8, image 1

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QUESTION 6 (a) The bar shown in Figure Q2(a) is subjected to tensile load of 150 Kn. If the stress in the middle portions is limited to 160 N/mm², determine the diameter of the middle portion. Find also the length of the middle portion if the total elongation of the bar is to be 0.25 mm. E E = 2.0 + 105N/mm². (12 marks) 150 KN 10 cm DIA 10 cm DIA 150 KN 45 cm Figure Q6(a) (b) A brass bar, having cross-section area of 900 mm², is subjected to axial forces as shown in Figure Q2(b), in which AB = 0.6 m, BC = 0.8 m, and CD = 1.0 m. Find the total elongation of the bar. E = 1.0 + 105N/mm2 . (8 marks) Page 4 of 5 B D 40 KN 70 KN 20 KN 10 KN Figure Q6(b) (TOTAL = 20 MARKS)

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  Introduction To find incremental revenue and cost, we subtract Current revenue and cost from Projected revenue and cost. Answer Current Situation Projected Sales and Profit Incremental Revenues and Costs Total Revenue Php1,500,000 Php1,800,000 + Php3000,000 Variable Cost 575,000 425,000 - Php 332,000 Direct Fixed Costs 625,000 700,000 + Php 75,000 Indirect Fixed Costs 100,000 100,000 No change Profit Php 200,000 Php 575,000 + Php 375,000 Profit increases by Php 375,000, thus a new camera and coffee maker must be purchased.

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