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Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017
(Regular & Supplementary)

Course Code: BE100
Course Name: ENGINEERING MECHANICS

Max. Marks: 100 Duration: 3 Hours

PARTA
Answer all questions. Each question carries 5 marks
1. The greatest and least resultants of two forces Fl and F2 are 17N and 3N

respectively. Determine the angle between them when their resultant is २149 N.

2. A simply supported beam AB of span 4m is carrying point loads SKN, 2kN, and 3kN
at 1m, 2m, and 3m respectively from the support A. Calculate the support reactions at
A and B.

3. State and explain parallel axis theorem.

4. Distinguish static friction and dynamic friction.

5. In an office, a lift is moving upwards with an acceleration of 1.5m/s*. Find the force
exerted by a body of mass 30kg on the floor of the lift?

6. Explain the concept of instantaneous centre? How can you locate it?

7. Distinguish between free vibration and forced vibration.

8. What are the general conditions of simple harmonic motion?

PART B
Answer TWO questions from each SET
SET 1
Each question carries 10 marks

9. ABCD is a square , each side being 20cm and E is the middle point of AB. Forces of

magnitude 7,8,12,5,9 and 6 kN act on lines of directions AB, EC, BC, BD, CA and

DE respectively. Find the magnitude and direction of resultant force.
10. Three cylinders weighing 100N each and 80mm diameter are placed in a channel of

width 180mm as in Figure 1. Determine the force exerted by (a) the cylinder A on B

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