well as on the mass of the body upon which the force has been applied. It is proportional to the force but inversely proportional to the mass. Force and mass are not dependent on acceleration. motion between the two surfaces. Kinetic friction is constant while static friction increases in response to any increase in the impending motion Weight(W) until a maximum value is reached‚ Weight is the force of gravitational beyond which there will be motion attraction between the Earth and the between the
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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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PHYS 1401 College Physics I Test 2 Page 1 of 6 Houston Community College System PHYS 1401 Test # 2 PHYS 1401 College Physics I Test 2 Page 2 of 6 Name ______________________________________________________ Date ____________ PHYSICS 1401. Test 1 Chapters 3‚ 4 and 5 _____________________________________________________________________________ INSTRUCTIONS: Answer all questions from Section I (2 points per question). And Solve at least four problems from Section II (20 points
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fluid Friction (horizontal) Normal contact force (vertical) Examples of noncontact forces: Gravity Magnetic forces Electrical forces Define friction force Frictional force: the component of the contact force responsible for changes in the runner’s horizontal motion; primarily responsible for human locomotion Dry Friction: acts between the non-lubricated surfaces of solid objects or rigid bodies in contact and acts parallel to the contact surfaces Static friction: when dry friction acts between
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Physics 111 Week 1 Summary Vectors in Physics Scalar: Has magnitude‚ no direction. Ex. Distance‚ speed‚ time‚ temperature‚ charge‚ energy. Vector: Mathematical quantity with magnitude and direction. Or A Ay Ax Kinematics – Mathematical description of motion without reference to what causes it. Need 1. Position and 2. Time to describe it. Instantaneous Velocity = Instantaneous Velocity
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surface‚ the surface exerts a push on it that is directed perpendicular to the surface. (b) Friction Force‚ f : In addition to the normal force‚ a surface may exert a frictional force on a object‚ directed parallel to the surface and opposite the motion or impending motion of the object. f s = µ s n - static friction‚ maximum friction before the object begins to move. n ff kk ==µµk k n - kinetic friction‚ friction on a moving object. DYNAMICS Types of Forces: (c) Tension Force‚ T : A pulling force
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Journal of Manufacturing Systems Vol. 16/No. 5 1997 A Systems Model and Simulation of the Vibratory Bowl Feeder Gary P. Maul and M. Brian Thomas‚ The Ohio State University‚ Columbus‚ Ohio ture of a vibratory bowl feeder is the maximum speed at which it can convey parts. Though not the first to research vibratory feeders‚ he worked independently of other investigators to develop a basic theory of operation. He defined the essential parameters for bowl analysis and with these defined the
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3.2.1 Study: Therein Lies the Rub Study SheetStudy Sheet Physical Science (S2541215) Claire Hasenoehrl Date: ____________ Use the spaces below to take notes on the key concepts presented in this study. Main idea: Friction is the force that opposes motion when two surfaces rub together. The force that opposes motion when two materials touch each other. causes object to accelerate downward The force between two objects at rest that opposes their sliding relative to each other. The frictional
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FIRST MID-QUARTER ASSESSMENT IN SCIENCE (8th Grade – Candid Puffin) Name: _____________________ Date: ________________ I. KNOWLEDGE A. Identification. Identify the law/concept that explains each of the given phenomena. Write only the letter of the correct answer on the space provided. A – Law of Inertia B – Law of Acceleration C – Law of Interaction _____ 1. Recoil of a gun when fired _____ 2. Two men find a car harder to push than a tricycle _____ 3. A body moves backward
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You design a simple friction brake to stop the cylinder by pressing the brake against the outer rim with a normal force. The coefficient of kinetic friction between the brake and rim is 0.333. What must be the applied normal force to bring the cylinder to rest after it has turned through 5.25 rev? [pic] A 2.2kg hoop 1.2m in diameter is rolling to the right without slipping on a horizontal floor at a steady 3 rad/s. (a) how fast is its center moving? (b) What is the total kinetic energy of the hip
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