SET 2 Answer any 2 questions. Each question carries 10 Marks (2 X 10 = 20 Marks)
12. Z - section is shown in the below figure 5. Determine the centroid of the given section
after selecting proper references axis.
a) X coordinate

b) Y coordinate

لج ين ‎1൨10‏

2501-1
Fig.5

13. A uniform ladder of length 25m and weight W is leaning against a wall. It makes 45°
with the horizontal. A man whose weight is 0.6 times that of the ladder goes up the
ladder. Determine the maximum distance he can climb before the ladder slips. Assume
coefficient of friction between the ladder and the wall to be 0.25 and that between the
floor and the wall to be 0.3.

14. A simply supported beam of length 4m has a concentrated load of 5121 at Im from the
left support. It also has a uniformly distributed load of 2kKN/m over its right half. Find the

support reactions using the principle of virtual work.

SET 3 Answer any 2 questions. Each question carries 10 Marks (2 X 10 = 20 Marks)
15. A reciprocating engine mechanism is shown in the figure 6. The crank OA has a constant

angular velocity of 300 rpm. The crank OA is of length 12 cm and the connecting rod AB