PPT-Pendulums Simple pendulums ignore friction, air resistance, mass of string

Physical pendulums take into account mass distribution friction air resistance The force that pulls the mass back towards equilibrium is the restoring force Pendulums If the restoring force is proportional to the displacement then the pendulums motion is simple harmonic. 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. . B. . Energy . change is understood in terms of forces--pushes or pulls. . C. Some forces act through physical . contact . while others act at a distance.. Big Idea 13 : Forces and Changes in Motion. Benchmark Number . Fall . 2014. September 15. Reminder:. Mastering Physics homework #1 due tomorrow night at midnight. Projectile Motion. U.S.S. Missouri firing 16-inch shells - J.D. Rogers. 2. Demo: slug gun – 1D60.20. What is the motion simple pendulum called? . Starter. Look at the pendulum and describe its motion. . Too Easy? What is the time period of a simple pendulum? . Lesson 10/21. Pendulums oscillate (move side to side) . Physics 7C lecture 13. Tuesday November 12, 8:00 AM – 9:20 AM. Engineering Hall 1200. Applying a torque. Torque:. . τ. = r × F. Torque and angular acceleration for a rigid body. The rotational analog of Newton. 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?. A chair will be placed in the middle of the floor. Teacher question: Are there any forces acting on this chair? . Invite . a student to gently push the chair a short distance across the floor. Ask the same teacher question . 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?. CHAPTER 19. M. OSTMANN. 7. th. Grade Science. Kate Bond Middle School. WHAT IS A FORCE?. What causes these cyclists to move forward?. What prevents these cyclists from moving as fast as a race car?. 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…... Community Values & . Personal Standards. As a Forest Park citizen, I promise to. Show respect. Make good decisions. Solve problems and. Practice kindness. . TODAY.. 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. 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?.