PPT-1 6 Friction 2 Objectives

Students must be able to Utilize theory of dry friction Describe theory of dry friction Describe physical meanings of frictional effects Describe and differentiate between static and kinetic coefficients of friction. 3 FRICTION The property by virtue of which a resist ing force is created between two rough bodies that resists the sliding of one body over the other is known as friction The force that always opposes the motion of o b Draw a FBD including friction c Solve problems involving friction brPage 2br READING QUIZ 1 A friction force always acts to the contact surface A normal B at 45 C parallel D at the angle of static friction 2 If a block is stationary then the fric Mr. McMartin. Beta Pod Science. While playing ball, your friend throws the ball out of your reach. Rather than running for the ball, you walk after it. You know that the ball will stop. But do you know why?. Friction. Friction is a force that opposes the motion, or tendency of motion, of an object.. Friction is primarily caused by the chemical bonding of molecules at the surfaces of objects in contact (intermolecular forces which are electrical in nature). Is F = . μ. N. What is Friction?. Resistive . force caused by two surfaces rubbing against each other. R. esists . an object's motion . - acts . opposite direction of motion . or "intended . motion. EQ: What changes an object’s motion?. Friction and Gravity. What happens when you jump on a sled on the side of a snow-covered hill?. What happens at the bottom of the hill?. Friction and Gravity. Why does the sled’s motion change on the side of the hill and then again at the bottom?. Friction. Unit 2 . Lesson 1. Friction. Friction is a part of everyday life, without it the world would be a very different place. Walking would not be possible, either would driving a car or playing sports. Even sitting on a stool would be difficult.. Notes!. Friction.   . Friction. is a force that o. pposes. motion between . two. surfaces that are touching and creates heat. Friction can be helpful or harmful depending upon the situation..  . In-Class Activities. :. Check Homework, if any. Reading Quiz. Applications. . Characteristics of Dry Friction. . Problems Involving Dry Friction. Concept Quiz. Group Problem Solving. Attention Quiz. Grade Science. What is it?. The force that slows motion between two surfaces that are in contact with each other.. Real life examples. . A baseball player diving into home plate.. Tires on a car can roll freely. What factors affect (the size of) friction?. Survey says:. Surface texture. Surface material. Surface area. Speed of slide. Mass. Weight. Angle of surface. Normal Force. What is the mathematical relationship between…... . Chris Koralik. Kor-Pak Corporation. Impetus and Introduction . Every EOT Crane needs brakes. Several variables involved in brake selection and accurately specifying brake. Not all brakes are created equally. www.mintex.co.uk Brake Pad and Brake Disc Technical information 2 Brake Pad and Brake Disc Fault Diagnosis Brake Pad and Brake Disc Fault Diagnosis Balancing according to the guidelines of the vehicl I can . explain what causes friction and how it affects the motion of an object.. I can . identify and describe the four types of friction.. I can . give examples of the four types of friction.. Forces: Friction.