M.O.S. Chapter-1 (B.E. 3rd sem Mechanical, Civil, Automobile, Mining)

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Sub:- GT.& A.G              Marks :30                     Time:1 hour
1.Define: (1) Mechanics (2) Space (3) Inertia (4) Equilibrant force (5) Force    (6) Particle (7) Cohesion-Adhesion (8) Composition of forces (9) Couple (10) Kinetics	05
2.Fill in the blanks: (1) 1 hp = _______ N.mm/sec (2) 1000 MPa = _______ kN/mm2 (3) The characteristics of forces are____. (4) _______law indicates nature of force.	02
3.States basic principles of Mechanics. Explain Parallelgram law of forces with derivation. OR  Explain different system of forces.	07
4.Explain Lami’s principle in brief. OR  Explain resultant force. Find the magnitude of two forces such that if they act at right angle, square of their resultant is 40kN and is 52kN if they act at 60°.	07
5.Find resultant of the force system shown in Fig 1.OR  Explain Law of moments in brief. Write chractaristics of couple.	07
6.What is moment? Find magnitude, direction and position of resultant force of the force system at point A as given in Fig 2. OR  What is Couple? Find equivalent force-couple system at point A as shown in Fig 3.	07