Physics Review Notes 2007–2008 Tom Strong Science Department Mt Lebanon High School strong@dementia.org June‚ 2008 The most recent version of this can be found at http://www.tomstrong.org/physics/ Chapter 1 — About Science . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 2 — Linear Motion . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 3 — Projectile Motion . . . . . . . . . . . . . . . . . . . . . . . . Chapter 4 — Newton’s First Law of Motion - Inertia . . . . .
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Does your child or toddler love to play on swings? If so‚ you may want to double check that it is not manufactured by Little Tikes. While this is a normally safe activity‚ parents should be aware of a very large recall of children’s swings from Little Tikes. The company has recently issued a recall of approximately 540‚000 units of their “2-in-1 Snug ’n Secure” pink toddler swings. The company has received over 100 consumer reports of the swing seats breaking. Of these incidents‚ 39 injuries to
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Goals The purpose of the lab experiment is to explore simple harmonic motion (SHM). We will accomplish this through the validation of harmonic calculations and ultimately creating a time piece (oscillator) Method In part A (Simple Pendulum) we will measure the effects of mass on the period of the pendulum. We will also calculate the period using small angular displacements and compare the results. We will also explore the effects on the period when the angular displacement is not “very small”
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relative to you‚ the car you pass has an acceleration a to the west. However‚ the driver of the other car is maintaining a constant speed and direction relative to the road. Is the reference frame of your car an inertial one? If not‚ in which direction (east or west) is your car accelerating relative to the other car? Determine the Concept No. You are in a non-inertial frame that is accelerating to the east‚ opposite the other car’s apparent acceleration. 3 • [SSM] You are riding in a limousine that
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Experiment 2: Kinematics of Human Motion Abstract Kinematics is the branch of classical mechanics that describes the motion of bodies and systems without consideration of the forces that cause the motion. There are four activities done in this experiment‚ graphical analysis of human motion‚ where displacement vs. time and velocity vs. time were graphed. Graphical analysis of motion where in the 10th seconds the total displacement is 14.69m‚ average velocity is 1.47 m/s. Reaction time where
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Center of Gravity The point in a body or system of bodies at which the whole mass may be considered as concentrated. When an object’s weight is distributed uniformly‚ the center of gravity lies at its geometrical center. For irregular shaped objects‚ the center of gravity is near to the concentration of its mass. Equation: Where: X= center of gravity xi= distance of the objects from fulcrum or arbitrary axis mi= mass of the object Sample Problems 1.) Suppose your lab partner has
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What Factors Affect the Period of a Pendulum? Introduction In this experiment‚ my group will find out what are the factors that affect the period of a pendulum. In this report‚ I will personally explain the aim of the experiment‚ the hypothesis of my group‚ the variables‚ the apparatus‚ method‚ data‚ data analysis‚ evaluation and last but not least the conclusion. Aim To find out whether the heavy or light pendulum will affect the period as well as the string’s length Hypothesis
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What is the direction of the acceleration vector for each of these situations? Remember that if an object speeds up‚ then the velocity and acceleration vectors are in the same direction. If an object slows down‚ then they are in opposite directions. Any object that is traveling in a vertical direction also experiences acceleration due to gravity. Left: Object travels to left and speeds up. Down: Object is tossed upward. A ball is tossed up into the air with a velocity of 50 m/s. The figure
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The Speed of Toy Cars & Measuring Acceleration Introduction: The Speed of Toy Cars & Measuring Acceleration was investigated by using a ticker timer and changing the angle of the ramp. Changing the angle of the ramp affects the speed and acceleration of the trolley. The speed and acceleration of the trolley was determined by using the ticker timer. Aim: The aim of the practical is to investigate the motion and acceleration of a trolley by using a ticker timer and rolling the trolley down a ramp
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affected his life‚ particularly his relationship with his girlfriend Kim. Also‚ he is now terrified of swimming‚ especially when the nightmares come back. Duncan’s summer job is with the public transit lost and found. While trying to make the hours go faster‚ Duncan looks through the items‚ especially the books and golf clubs. One day he discovers an unmarked journal with no name‚ which depicts sadistic animal torture experiments‚ boasts of arson fires‚ and the planning for the serial killings of three
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