## MechanicsFirst published over 40 years ago, this work has achieved the status of a classic among introductory texts on mechanics. Den Hartog is known for his lively, discursive and often witty presentations of all the fundamental material of both statics and dynamics (and considerable more advanced material) in new, original ways that provide students with insights into mechanical relationships that other books do not always succeed in conveying. On the other hand, the work is so replete with engineering applications and actual design problems that it is as valuable as a reference to the practicing engineer as it is as a text or refresher for the general engineering student. |

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### Contents

PREFACE | 1 |

CHAPTER 11 CONDITIONS OF EQUILIBRIUM | 13 |

Equations of Equilibrium | 19 |

Parallel Forces | 32 |

Distributed Loadings | 41 |

CHAPTER IV TRUSSES AND CABLES | 52 |

Funicular Polygons | 59 |

CHAPTER V BEAMS | 68 |

Specific Examples | 224 |

CHAPTER XIIIDYNAMICS OF PLANE MOTION | 231 |

General Motion in a Plane | 239 |

CHAPTER XIVWORK AND ENERGY | 250 |

Energy of Plane Bodies | 260 |

Applications | 264 |

CHAPTER XV IMPULSE AND MOMENTUM 50 Linear Momentum | 270 |

Angular Momentum | 276 |

Distributed Beam Loadings | 75 |

CHAPTER VI FRICTION | 83 |

Composition of Forces and Couples | 102 |

Conditions of Equilibrium | 108 |

Space Frames | 121 |

Straight and Curved Beams | 127 |

CHAPTER VIIITHE METHOD OF WORK | 133 |

Systems of Bodies | 139 |

Stability of Equilibrium | 151 |

Motion in Space | 161 |

Applications | 167 |

CHAPTER XDYNAMICS OF A PARTICLE | 174 |

Curvilinear Motion of a Particle | 184 |

Systems of Two Particles | 190 |

Accelerations | 204 |

CHAPTER XIIMOMENTS OF INERTIA | 211 |

General Properties | 218 |

Applications | 281 |

Impact | 287 |

CHAPTER XVIRELATIVE MOTION 54 Introduction | 294 |

Nonrotating Vehicles | 296 |

Rotating Vehicles Corioliss Law | 301 |

Applications | 307 |

Theorems on Rotation in Space 813 | 313 |

Discussion of the Theorems | 315 |

The Principal Theorem of the Gyroscope | 322 |

Applications | 326 |

The Gyroscopic Ships Compass | 334 |

PROBLEMS | 341 |

ANSWERS TO PROBLEMS | 441 |

LIST OF EQUATIONS | 455 |

457 | |