of the origin of the yo-yo but many say China. Others say that ancient Greeks as far back as 2‚500 years used yo-yos for entertainment. The motion and the process of playing with a yo-yo incorporates many concepts in physics of momentum‚ energy‚ friction‚ etc. With simply a spool and a bit of string a yo-yo is a fantastic model of physics hard at work. In the first versions of the yo-yo‚ the string was tied directly to the spool‚ which made the yo-yo snap back up as soon as it was fully extended
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there is always an equal or opposite reaction " the force exerted by object A on B is always equal n opposite to the force exerted by B on A" Friction: When any objects slides or roles on the surface of another object which experiences a force opposite to its direction of motion. This opposing force is called Force of Friction. Causes of friction: If the objects are observed on the electronic microscope‚ the
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for Inquiry 4.2. To get a better picture of the Friction force the mass was changed. Will the measure of force change if the mass changed. Inquiry 4.3 was different. The mass was kept the same but the surface area was changed. What will happen
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Unlike the skin that covers the rest of our bodies‚ friction ridge skin is corrugated: a network of raised areas of flesh called ridges and the recesses between called furrows. Lining the tops of the ridges are thousands of sweat pores that‚ in most people‚ regularly emit perspiration. Biologically‚ friction ridge skin improves our ability to grip and gain traction. But‚ when it comes in contact with a surface‚ there is usually
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Topic #5(. Forces 1. Forces 2. Newton’s First Law of Motion 3. Newton’s Second Law of Motion 4. Units of Force 5. Mass and Weight 6. Two Ways to Measure Mass 7. Friction 8. Net Force and Acceleration 9. Free Fall 10. Newton’s Third Law of Motion *11. Forces on Inclined Planes Notes should include: Defn: Dynamics is defined as the study of the effects of forces on matter. Forces: Often a force is described as a push or a pull. Forces are often categorized according
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parameters‚ the flow rate‚ Reynolds number and friction factor were able to be calculated for each test for water and mercury. The main purpose of the process was to analyse and identify the regions of laminar flow‚ and turbulent flow‚ as well as the transitional region in between. These values enable the calculation of the friction factor of the pipes for specific flow rates. 2.0 Background The viscosity (µ) in the pipe flow of a fluid produces friction (shear stress) between lumps of fluid as they
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amounts of blocks. In lab 4.3‚ the surface area of the blocks sliding across a flat surface was weighed using a spring scale. In all of these labs‚ the conclusion is that friction is conducted by the sliding of the force in newtons and the surface the object is slid upon. To begin‚ in lab 4.1‚ the lab included a series of tests of friction using various surface types. There were four trials that was incorporated in this experiment. For example‚ on the tabletop surface‚ the average of four trials in newtonian
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theory applied to fingerprint analysis? The complete friction ridge identification process involves using the "identification philosophy and scientific methodology" in determining whether or not an "unknown friction ridge impression"(herein‚ called latent) came from the same source as a "known inked print (herein called print)to the exclusion of all others. (1) David Ashbaugh refers to this identification process as‚ "a guide of how friction ridge quantative-qualititive analysis is transformed into
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the kinetic energy of a wooden block and the distance a mass falls. Based on the results‚ the block’s kinetic energy and velocity increase with the falling distance‚ as predicted. But little changes in velocity near the end of the motion show that friction and other factors might be important. The block’s maximum velocity ranged from 0.869 to 1.193 m/s at different falling distances‚ and its resulting kinetic energy ranged from 0.074 to 0.134 J. Introduction Imagine yourself riding a roller coaster
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Dynamics Test Review Dynamics: The study of forces that cause motion Types of Forces: can accelerate‚ deform‚ rotate measured in Newtons (N). Force of Gravity: force of attraction between all matter Force of Friction: force that resists relative motion of two surfaes. Always parallel to surface in contact Normal force: force of contact that exists between two surfaces Applied Force: the push or pull Tension Force: the force of a rope or a chain (can only pull) Air resistance: caused by a
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