(^764) A Textbook of Engineering Mechanics
Potential energy, 668
Power, 657
- developed by a torque, 473
- transmitted by belt, 742
- transmitted by gear, 767
- Units of, 657
Preparation of force table, 271, 325
Presentation of units and their values, 5
Pressure, Centre of, 797 - diagrams, 806, 807, 809
- head, 791
Principles of equilibrium, 56 - moments, 28
- physical independence of forces, 14
- resolution, 17
- transmissibility of forces, 14
- virtual work, 388
Proney brake dyncmometer, 660
Proof of Lami's theorem, 67
Parallel axin theorem, 104 - Pascal's law, 790
- Perpendicular axis theorem, 117
- Polygon Law of forces, 22
- Principle of work, 288
Pulley, 224, 225, 226, 228
RRRRR
Rack and pinion, 765
Radius of gyration, 685
Range of a projectile, 464- on a horizontal plane, 469
- on an inclined plane, 486
Ratio of tensions 744, 756
Reactions of a frame, 254 - vehicle moving on a level circular
path, 634
Recoil of gun, 545
Redundant frame, 269
Relation between efficiency M.A. and
V.R. of a machine, 189 - effort and weight, 178, 179
- kinetics of linear motion and
kinetics of motion of rotation, 689- linear motion and angular motion,
494 - mass and weight, 27
- torque and angular acceleration,
688
Relative velocity of rain and man, 444 - of two bodies moving along
inclined directions,
Resolution of a force, 17
Resultant force, 15
Reversibility of a machine, 190
Roller supported beams, 248
Rolling friction, 140
Rope brake dynamometer, 658 - drive, 756
Rules for S.I. units, 6
SSSSS
Soalars and vectors, 11
Science, 1
Screw friction, 178
Screw jack, Differential, 231- Simple, 229
Sceond, 5 - system of pulleys, 226
Self-locking machine, 191
Shape of a loaded string, 36
Sign conventions of virtual work, 389
Simple gear drive, 766 - levers, 37
- machine, 188
- pendulum, 590
- pulley, 224
- train of wheels, 768
- screw jack, 229
- wheel and axle, 206
Simply supported beams, 242
Single purchase crab winch, 218 - threaded screw, 177
S.I. Units, 4