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 ME 225 ; PRINCIPLES OF TRIBOLOGY. PRESENTATION ON. SIDDAPPAJI .B. FRICTION. A force that resists the relative motion or tendency to such motion of two bodies in contact. . Friction always works in the direction opposite from the direction the object is moving, or trying to move. . Wedges . & Screws. ENGR B36 - Statics. Pat Aderhold. 11/24/2014. News & Notes. News & Notes. Today’s Agenda. More friction.... Wedges. Screws. Practice Problems on white board. Review / project time. A force that opposes motion between two surfaces that are in contact.. Causes a moving object, such as a ball, to slow down and stop.. Occurs because the surface of any object is rough (microscopic hills and valleys). 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. Friction is the resistance to the sliding, rolling, or flowing motion of an object due to its contact with another object. . When a moving object comes in contact with another object, friction is the opposing force that slows or stops the moving object. . 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…... 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…... The amount of friction depends on...... Surface Roughness. Forces pushing the two surfaces together.. Types of Friction. https://app.discoveryeducation.com/player/view/assetGuid/72E28A59-0EAB-4EC9-A097-365513460023. gawas. . . Sonam. . gosavi. Neekita. . Bhowar. . FRICTION. Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.. What do you Remember about Friction?. Friction opposes motion. Friction is dependent on the texture of the surfaces. Friction is dependent on normal force. motion. friction. What do you Remember about Friction?. 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. 1. STATICS. (ENGINEERING MECHANICS-I). بسم الله الرحمن الرحيم. Friction. Friction is a force that resists the movement of two contacting surfaces that slide relative to one another..