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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AL Physics Centripetal Force(1ST Lab Report) Objective : To measure the centripetal force by whirling it around a horizontal circle‚ then compare the result with theoretical value FC = m(2r. Apparatus : 1Rubber bung 1Glass tube (About 15 cm long) 1Slotted weights‚ with hanger 12 × 0.02 kg 1Nylon thread 1.5 m 1Paper marker 1Adhesive tape 1Metre rule 1Stop watch 1Safety goggles Set-up: Procedure: 1. Attach one end of a 1.5 m length of nylon thread to a rubber bung and thread
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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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variable represents the length of the string and the dependent variable represents the period of one oscillation. The control variable is the mass of the pendulum. In this lab our goal was to see if we can prove if the acceleration due to gravity is 9.8m/s2. The R2 in this lab is closed to 9.8 m/s2 . The formula that we used in this lab is T=2πLg and then we solved for g=L(T2π)2. HYPOTHESIS: The gravity will be 9.81 m/s2 at sea level due to the acceleration. PROCEDURE: Materials: stopwatch‚ meter
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Lab #1: Projectile Motion Purpose: To determine experimentally the initial and final velocities of an air powered projectile. Hypothesis: If the angle of the rocket is launched at 45 degrees than the distance and velocity will maximize. Materials: Rocket launching platform Rocket launcher Rocket body Air pump Safety goggles Rubber washer Nose cone 40‚ 45‚ 50‚ 55 and 60 angle wooden blocks Measuring wheel Procedure: 1. The rocket was assembled by the rocket launcher
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| Buoyant ForceB=Δmg=ρf VobjgThis equation was used to calculate the buoyant force of an object. | Experimental Procedure: ProcedureA: * Setup similar to the spring constant lab * Use the same or a similar spring from the spring constant lab * Find the spring constant of the smallest spring used from previous lab if not already foundB: * Use the same metal rod from the Error of Propagation experiment and attach it to the bottom of the spring * Fully submerged the metal rod in a beaker
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Introduction. Friction was studied in this lab. The experiments were conducted using a clipboard glued to various surfaces with diffirentiating frictional properties. In order for us to test the varying Static friction or Kinetic friction we used a Newton force gauge‚ some wooden blocks‚ and a metal weight. The actual experiment consisted of two parts. The first part measured the net force‚ or more specific the net force required to overcome the kinetic friction coefficient‚ to move the block across
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Aim: To find the mass in grams (m) of a paperclip. Apparatus: Procedure: 1. Using a piece of string‚ the external circumference(C) of the small test tube was found and was then used to find A ‚ the cross sectional area of the small test tube A=C24π . 2. The beaker was placed under the test tube after it was clamped on the retort stand to collect excess water. The large test tube was filled with water. After which‚ the small test tube which had a fitted scale was placed inside to float
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IB Physics Internal Assesment – Design Aspect 1: Focused problem: Investigate the relationship between the surface area of a circular hole and the time water takes to drain through it. Variables: Independent: Surface area of the hole Dependent: Time water takes to drain Fixed: Amount of Water Container Environmental Conditions Aspect 2: Control of the Variables The independent variable in this case is the surface area of the hole‚ and the dependant will be the time water takes
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“The Domino Effect” Teacher’s Prompt Investigate the domino effect with a set of dominoes. Aim To investigate the relationship between the mass of the dominoes‚ and how it impacts the time taken of the domino effect. Independent Variable: The mass of each domino (12.38 g‚ 32.38 g‚ 42.38 g‚ 62.38 g‚ 82.38 g). Dependent Variable: Time taken of the domino effect. Controlled Variable: The number of dominoes used (8 dominoes)‚ the distance between the dominoes (2 cm)‚ the loads used as the initial
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