Available at bookstoreregister using link on our web page using multiple clickers is an academic integrity violation. Losses by pipe friction let us study the flow in the region where the velocity distribution is fully developed after passing through the inlet region as shown below. Thisclassisusuallyreferredtoasstatics,butwellbecoveringsomeextra material that typically falls into the category of dynamics. If it moves at a constant velocity, find the coefficient of friction. Pdf me6302 manufacturing technology i books, lecture. Physics1200 mechanics, kinematics, fluids, waves lecturer. The force of static friction is to the left because if there were no friction, the book would slide. Friction power can be calculated as, pf 63,000 tf n august 15, 2007 16 a platetype clutch has the following properties. The students completing this course are expected to understand the concepts of forces and its resolution in different planes, resultant of force system, forces acting on a body, their free body diagrams using graphical methods. Sliding kinetic friction piano moves static force kinetic force.
Dry friction static and kinematics, wedge friction, disk friction thrust bearing, belt friction, square threaded screw, journal bearings axle friction, wheel friction, rolling resistance. Lecture notes tribology mechanical engineering mit. Find the acceleration of the system and the tension in the string. This section provides the lecture notes for the course, information on lecture topics, and question posed to the class to stimulate discussion. Nlm friction, chapter notes, class 11, physics iitjee. Syllabus, question banks, books, lecture notes, important part a 2 marks questions and important part b 16 mark questions, previous years question papers collections. The topics are covered in the following text book in the chapter indicated. Analysis of large plastic deformation of elastoplastic solids.
A force of 200 n is required to slide a 325 n trunk on a level surface with a constant velocity. Haque 2 shallow foundations are usually located no more than 6 ft below the lowest finished floor. Basic applications example 2, page 2 of 2 the fourth equation comes from the condition of impending slip at point a, because if slip is just about to occur, then the friction force, f a, is at its maximum value, which is a n a. First and second moment of area and mass, radius of. Alternatively, manipulate the equations as follows. Calculate the coefficient of friction between the trunk and plane. Understanding the force of friction equation n f the force of friction equals the coefficient of friction times the force normal. R o 12 in r i 9 in engagement force of 120 lb normal force turns at 2000 rpm friction disc has coefficient of friction of. The easiest way to solve these equations is to use the general equation solver on a calculator. As p increases, static friction force f increases as well until it reaches a maximum value f m. Fm psn further increase in p causes the block to begin to move as f drops to a smaller kinetic friction force f k.
A shallow foundation system generally used when 1 the soil close the ground surface has sufficient bearing capacity, and 2 underlying weaker strata do not result in undue settlement. For block to remain stationary, in equilibrium, a horizontal component f of the surface reaction is required. Friction practice if it takes 200n to move a 100 kg box across a flat floor at constant speed, what is the coefficient of friction. Classification of mechanisms basic kinematic concepts and definitions degree of freedom, mobility. Friction factor as a function of reynolds number for a packed bed of particles. Pdf ge8292 engineering mechanics lecture notes, books. Martin, friction in internal combustion engines, i. Frictional forces friction is a force exerted by a surface. Exercise set p93 please submit to ta at the end of the lecture workers are pulling a 400 lb crate up an incline as shown in fig. Md16 clutches and brakes university of northern iowa. This shows that there is some force opposing the motion of the book. In this lecture, students will learn to distinguish between static and kinetic friction. Fm psn further increase in p causes the block to begin to move as f drops to a smaller kineticfriction force f k.
Symbols are data from experiments, the dashed line is the carmankozney equation, and erguns correlation is represented by the solid line. As p increases, staticfriction force f increases as well until it reaches a maximum value f m. Determine torque and power that can be transmitted by this system. For each lecture, the powerpoint file is available, along with a fullcolor 4slideperpage pdf version. We have learned about acceleration beforekinematics. Training topics introduction safety moment what a lubricant is expected to do what is friction causes lubrication regimens lubrication intervals one minute inspections. If a fluid is flowing in the round pipe of diameter d at the average flow velocity v, let the pressures at.
We can use kinematics equations to find acceleration, and then plug that into fma i created an epub version of the notes for this unit. Download ge8292 engineering mechanics lecture notes, books, syllabus parta 2 marks with answers ge8292 engineering mechanics important partb 16 marks questions, pdf books, question bank with answers key. Mechanics lecture 5 bin chen njitphysics department. Note that the kinetic friction force remains constant even as the velocity increases. Solution constant speed means no acceleration, so the applied force is balancing the friction force or a state of equilibrium exists f a f f. Indication of laminar or turbulent flow the term fl tflowrate shldbhould be e reprepldbr ldlaced by reynolds number,where v is the average velocity in the pipe, and l is the characteristic dimension of a flow. Engineering mechanics pdf 1st year notes pdf download. Inqu 4010 march 31, 2018 chapter 6 inqu 4010 chapter 6 friction factors 6. Lecture 1, pg 9 p101 lectures participation is key.
If we push a book on a horizontal table with a certain initial velocity, it eventually comes to rest. The force of static friction is to the left because if there were no friction, the book would slide to the right, so the force. When an object rests on a surface, the surface exerts a normal force on the object, keeping it from. Lecture notes physics i physics mit opencourseware. The important concept is the resolution of forces to obtain the equations determining equilibrium. Paper c6785, combustion engines friction and wear, pp. Lecture 8, pg 9 coefficients of friction tire wet pavement 0. Ge6253 engineering mechanics unit 5 friction lecture. Lecture 1 introduction, units, linear algebra 0introduction welcometoengineeringmechanicsi. Ge6253 engineering mechanics unit 5 friction lecture notes thanga kasi rajan s assistant professor, department of mechanical engiineering kamaraj. Pdf me6401 kinematics of machinery kom books, lecture.
Me6401 kinematics of machinery kom syllabus unit i basics of mechanisms. We learned a formula for determining the amount of friction acting on an object. Ge6253 engineering mechanics unit 5 friction lecture notes free download as powerpoint presentation. Lecture notes lesson notes the lesson notes below are designed to help you follow along with the video lesson and walk away with a document that you can reference as.