█ _ 0 حصريا كتاب Statics and Dynamics Andy Ruina 2024 Ruina: Online electronic version May not be emailed or posted ANYWHERE May copied, printed without express written permission of the authors Introduction to STATICS and DYNAMICS Andy Rudra Pratap Oxford University Press (Preprint) Most recent modifications on August 21, 2010 Filename:Summaryofmechanics Reference Tables: The front back tables concisely summarize much text material 0) laws mechanics apply to any collection ‘body ’ This body could overall system study or part it In equations below, forces moments are those that show a free diagram Interacting bodies cause equal opposite each other I) Linear Momentum Balance (LMB) Force Balance Equation Motion Fi L total force is equal to its rate change linear momentum (I) Impulse momentum (integrating in time) t2 t1 Fi ·dt Net impulse in momentum (Ia) Conservation momentum (if ) L = 0 L L2 L1 0 When there no net does (Ib) Statics (if negligible) Fi If inertial terms zero the net (Ic) II) Angular (AMB) Moment motion MC HC sum the rate angular momentum (II) Impulse (angular) (integrating time) t2 t1 MCdt to the (IIa) Conservation 0) HC 0 HC HC2 HC1 0 If moment about point C then about point C (IIb) Statics (if negligible) MC the total (IIc) III) Power (1st law thermodynamics) Equation Q P EK EP Eint E Heat flow plus mechanical power into change in energy (kinetic + potential + internal) (III) for finite time t2 t1 Qdt t2 t1 Pdt E going (IIIa) Conservation Energy (if 0) E 0 E E2 E1 flows into system, then (IIIb) Statics (if negligible) Q Eint kinetic energy then and internal due mechanical work heat (IIIc) Pure Mechanics (if dissipation are negligible) P well modeled as purely mechanical kinetic and (IIId) Summary Mechanics Some definitions (Also see index tables) *r or *x Position e g ,*r i *r i=O position point i relative origin, O *v d*r dt Velocity , *v i *v i=O velocity O, measured non rotating reference frame *a d*v dt D d2*r dt2 Acceleration *a i *a i=O acceleration Newtonian frame * F A from B FA * M * MC D * M=C Torque forces about *! Angular measure rotational rigid object *! B * *! Angular rigid object * L 8<: P mi *v i discrete R*v dm continuous Linear system’s translational rate (weighted by mass) D mtot *v cm P * L mi *a i discrete R*a dm continuous Rate linear momentum The aspect balances net force mtot *a cm * H=C 8<: P*r i=C discrete R*r =C *v dm continuous Angular system about (weighted mass distance from C) P * H=C *a dm momentum about C The net torque EK 8<: 1 2 mi v2 i discrete 1 2 R v2dm continuous Kinetic scalar Eint D (heat like terms) Internal system’s total * Fi *v i CP * Mi *! i torques Also, WP work Icmچ 26664 I cm xx I cm xy cm xz I cm yy cm yz I cm xz cm yz cm zz 37775 Moment inertia matrix about center (cm) A distribution كتب الهندسة مجاناً PDF اونلاين تُعرّف بأنّها إحدى المهن المتخصصة لتصميم وبناء وتشغيل الهياكل والآلات والأجهزة الأخرى من الصناعة والحياة اليومية كما وتُعدّ منهجاً متعدد التخصصات يشمل تعليم التكنولوجيا والعلوم والرياضيات والهندسة بالإضافة إلى أنّ المهندسين هم الذين يقومون بدورٍ أساسي إتاحة الاستخدامات العملية للاكتشافات العلمية والابتكارات التي تعزز الإنسان Engineering defined one specialized professions design, build, operate structures, machines, devices industry everyday life Engineering also multidisciplinary curriculum includes technology education, science, mathematics, engineering, addition fact engineers primary players providing practical uses For scientific discoveries, innovations strengthen man