tailieunhanh - Principles of Engineering Mechanics Second Edition H. R. Harrison

The exact relations between science and technology in particular have been debated by scientists, historians, and policymakers in the late 20th century, in part because the debate can inform the funding of basic and applied science. In the immediate wake of World War II, for example, in the United States it was widely considered that technology was simply "applied science" and that to fund basic science was to reap technological results in due time. An articulation of this philosophy could be found explicitly in Vannevar Bush's treatise on postwar science policy, Science—The Endless Frontier: "New products, new industries, and more. | Principles of Engineering Mechanics Second Edition H. R. Harrison BSC PhD MRAes Formerly Department of Mechanical Engineering and Aeronautics The City University London T. Nettleton MSc MIMechE Department of Mechanical Engineering and Aeronautics The City University London Edward Arnold A member of the Hodder Headline Group LONDON MELBOURNE AUCKLAND 1994 H. R. Harrison and T. Nettleton First published in Great Britain 1978 Second edition 1994 British Library Cataloguing in Publication Data Harrison Harry Ronald Principles of Engineering Mechanics. - I. Title II. Nettleton T. ISBN 0-340-56831-3 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means electronically or mechanically including photocopying recording or any information storage or retrieval system without either prior permission in writing from the publisher or a licence permitting restricted copying. In the United Kingdom such licences are issued by the Copyright Licensing Agency 90 Tottenham Court Road London W1P 9HE. Whilst the advice and information in this book is believed to be true and accurate at the date of going to press neither the author nor the publisher can accept any legal responsibility or liability for any errors or omissions that may be made. Typeset in 10 11 Times by Wearset Boldon Tyne and Wear. Printed and bound in Great Britain for Edward Arnold a division of Hodder Headline Pic 338 Euston Road London NW1 3BH by Butler Tanner Limited Frome Somerset. Contents Preface vii 1 Co-ordinate systems and position vectors 1 Introduction. Co-ordinate systems. Vector representation. Discussion examples. Problems. 2 Kinematics of a particle in plane motion 8 Displacement velocity and acceleration of a particle. Cartesian co-ordinates. Path coordinates. Polar co-ordinates. Relative motion. One-dimensional motion. Graphical methods. Discussion examples. Problems. 3 Kinetics of a particle in plane motion 21 Introduction. Newton s .