# Applied Mechanics AM 3rd Sem/Common/Dec 2018 Diploma Paper

## Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â SECTION-C

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1. Find the magnitude and direction of the resultant of the following force
1. 30 N due
2. 35 N due north-west.
• 15 N due
1. 16 N due 450 west of south
2. 32 N due 750 North
1. An electric light fixture weighing 50N hangs from a point c, by two strings AC and BC. The string Ac is inclined at 600 to horizontal and BC at 450 to the vertical. Determine the forces in string AC and
2. What do you mean by force? Explain Force
3. Derive an equation for equilibrium of a body lying on a rough inclined plane when the motion is in downward direction and force is acting parallel to the

## applied Mechanics 3rd Sem/Civil/dec 2018 Diploma Solved Question Paper

### Section B :applied Mechanics 3rd Sem/Civil/dec 2018 Diploma Solved Question Paper

Comparison between center of gravity and centroid.

Concept of rigid body and free body diagram.

Triangle Law of forces and Lami`s theorem.

Where the C.G. does lies of sphere, circular cone, and right circular cylinder

Define moment center and moment arm and moment of a couple

Friction. Give merits and demerits of friction.

Relation between efficiency, mechanical advantage and velocity ratio of a machine.

## applied Mechanics 3rd Sem/Civil /dec 2018 Diploma Solved Question Paper

### Section c :-applied Mechanics 3rd Sem/Civil/dec 2018 Diploma Solved Question Paper

Angle between two forces of magnitude Numerical.

Methods of reducing friction.

Â Input of machine

Efficiency of machine