Robert S. Ball

PREFACE.

TABLE OF CONTENTS.

LECTURE I. THE COMPOSITION OF FORCES.

LECTURE II. THE RESOLUTION OF FORCES.

LECTURE III. PARALLEL FORCES.

LECTURE IV. THE FORCE OF GRAVITY.

LECTURE V. THE FORCE OF FRICTION.

LECTURE VI. THE PULLEY.

LECTURE VII. THE PULLEY-BLOCK.

LECTURE VIII. THE LEVER.

LECTURE IX. THE INCLINED PLANE AND THE SCREW.

LECTURE X. THE WHEEL AND AXLE.

LECTURE XI. THE MECHANICAL PROPERTIES OF TIMBER.

LECTURE XII. THE STRENGTH OF A BEAM.

LECTURE XIII. THE PRINCIPLES OF FRAMEWORK.

LECTURE XIV. THE MECHANICS OF A BRIDGE.

LECTURE XV. THE MOTION OF A FALLING BODY.

LECTURE XVI. INERTIA.

LECTURE XVII. CIRCULAR MOTION.

LECTURE XVIII. THE SIMPLE PENDULUM.

LECTURE XIX. THE COMPOUND PENDULUM AND THE COMPOSITION OF VIBRATIONS.

LECTURE XX. THE MECHANICAL PRINCIPLES OF A CLOCK.

APPENDIX I.

APPENDIX II.

INDEX.

THE PATH OF A PROJECTILE IS A PARABOLA.

EXPERIMENTAL MECHANICS

A COURSE OF LECTURES

DELIVERED AT THE ROYAL COLLEGE OF SCIENCE
FOR IRELAND

BY
SIR ROBERT STAWELL BALL, LL.D., F.R.S.
ASTRONOMER ROYAL OF IRELAND

FORMERLY PROFESSOR OF APPLIED MATHEMATICS AND
MECHANISM IN THE ROYAL COLLEGE OF SCIENCE
FOR IRELAND (SCIENCE AND ART DEPARTMENT)

WITH ILLUSTRATIONS

SECOND EDITION

London
MACMILLAN AND CO.
AND NEW YORK
1888.

The Right of Translation and Reproduction is reserved

Richard Clay and Sons, Limited,
LONDON AND BUNGAY.

The First Edition was printed in 1871.