FRICTION Friction is necessary for walking due to the following reason‚ As per Newton’s third law of motion‚ (every action has an equal and opposite reaction) we can walk if and only if the ground we are walking on push our feet back with a force. Now‚ as per the third law the ground would definitely push our feet back but if we are walking on a perfectly smooth ground which has no friction our force would simply cancel out the force reverted by the ground and we would fall. If there was no
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For an object pulled or pushed horizontally‚ the normal force - N - is simply the weight: N = m g (2) where m = mass of the object (kg‚ slugs) g = acceleration of gravity (9.81 m/s2‚ 32 ft/s2) Frictional Coefficients for some Common Materials and Materials Combinations Materials and Material Combinations Static Frictional Coefficient - μs Clean and Dry Surfaces Lubricated and Greasy Surfaces Aluminum Aluminum 1.05 - 1.35 0.3 Aluminum- bronze Steel 0.45 Aluminum Mild Steel 0.61 Brake material
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Friction Friction Abstract Students learn the principles of friction by demonstrating the effect weight‚ angle and gravity on the speed of movement of objects. of Equipment 1. Friction Boards 2. Weights 3. Velcro Ball Game 4. Drill 5. ¾” Dowels 6. Rope 7. 3 x 8’ Flat Board 8. Styrofoam Boards 9. Bucket 10. Beer Glass 11. Decorations for Tortoise 12. Hairspray 13. Bennie Beads 14. Velcro 15. Hand Held Lenses 16. Drill Board Grade Level This activity is suitable for Middle and High School
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Friction Definition: Friction is the force resisting the relative lateral (tangential) motion of solid surfaces‚ fluid layers‚ or material elements in contact. Force of friction:- Friction is a force that is created whenever two surfaces move or try to move across each other. • Friction always opposes the motion or attempted motion of one surface across another surface. • Friction is dependant on the texture of both surfaces. • Friction is also dependant on the amount of contact force pushing
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Experiment 5: Friction Laboratory Report Charles Sanchez‚ Geminesse Sianghio‚ Ferguie Solis Department of Chemistry College of Science‚ University of Santo Tomas España Street‚ Manila Philippines Abstract In this experiment‚ a block of wood is used to observe friction on different surfaces such that an extra weight is also added to the block of wood to measure the same units under the different surfaces. With also the use of lubircant a member of the group was asked to observe the
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Friction is the force resisting the relative motion of solid surfaces‚ fluid layers‚ and material elements sliding against each other. There are several types of friction: Dry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction ("stiction") between non-moving surfaces‚ and kinetic friction between moving surfaces. Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.[1][2]
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Grealy she would have to disagree with her because she would feel comfortable with herself. This feeling however would bring a sense of relief for Grealy but as for Satrapi it wouldn’t because of her natural beauty. Satrapi was being educated in a non-religious French school. The atmosphere during that time was such that everyone was treated equally. An excessive devotion to a particular sect was not yet established during that time. Suddenly‚ after the Collazo 2 Islamic Revolution
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ENC1102 SUMMER II 2013 FICTION EXAM Choose the best answer that completes each statement. There is only ONE correct answer for each. Please mark your answers clearly by highlighting your answer. Each multiple choice question is worth one point. 1.) How did Miss Emily‚ in “A Rose for Emily” react when the town’s ladies called to offer condolences on her father’s death? A.) Met them at the door with a horsewhip B.) She begged them for financial help C.) She insisted
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experiment is to study the friction loss along a pipe. In this experiment‚ water and mercury have been used to demonstrate the law of resistance with different types of flow which are laminar and turbulent flow. The variation of head loss will be obtained and hence determined the Reynold numbers and friction factor. In the end of the experiment‚ the law of resistance which is the relationship between i and u will be determined and hence established the critical R and friction factor. 1.0 Introduction
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Friction on a surface. Aim: To establish the relation between weight of a rectangular wooden block lying on a horizontal table and the minimum force required to just move it using a spring balance Materials required: A rectangular block of wood with a hook ‚ set of weights‚ strong thread and a spring balance. Theory: The force of friction acting on a block of wood is proportional to the normal reaction acting on the block. By the third law of motion‚ normal reaction is equal to the weight
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