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Contents
- Introduction.
- Units of Work.
- Graphical Representation of
Work.
- Power.
- Units of Power.
- Types of Engine Powers.
- Indicated Power.
- Brake Power.
- Efficiency of an Engine.
- Measurement of Brake Power.
- Rope Brake Dynamometer.
- Proney Brake Dynamometer.
- Froude and Thornycraft
Transmission Dynamometer.
- Motion on Inclined Plane.
- Energy.
- Units of Energy.
- Mechanical Energy.
- Potential Energy.
- Kinetic Energy.
- Transformation of Energy.
- Law of Conservation of
Energy.
- Pile and Pile Hammer.
Work, Power
30 and Energy
CHAPTERCHAPTERCHAPTERCHAPTERCHAPTER
30.1. INTRODUCTION
Whenever a force acts on a body, and the
body undergoes some displacement, then work is
said to be done. e.g., if a force P, acting on a body,
causes it to move through a distance s as shown
in Fig. 30·1 (a). Then work done by the force P
= Force × Distance
= P × s
Sometimes, the force P does not act in the
direction of motion of the body, or in other words,
the body does not move in the direction of the
force as shown in Fig. 30·1 (b).
