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Mass, Length and Drop Angle's effect on the Period of a Pendulum
Lab report950000
Mass, Length and Drop Angle's effect on the Period of a Pendulum
Lab report

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Haris Samim, Leon, Nathaniel, Alexander, Abdul, Sammy | Physics | February 26, 2017  950000
Haris Samim, Leon, Nathaniel, Alexander, Abdul, Sammy | Physics | February 26, 2017 





















Abstract
The purpose of this lab was to i nvestigate whether the period of a pendulum is affected by the mass, length of pendulum or drop angle. Our goal is to determine the period of a pendulum . We tested the period by using an elect ronic pendulum that can automatically time the periods to reduce human error. It was found that the mass of the bob and drop angle resulted in having no effect on the period because its acceleration was increasing at a constant rate . Pendulums swinging through a larger angle/mass accelerate ( gravity ) more than pendulums swinging through a small angle/mass .

Introduction
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P   = period; i.e., the time for one pendulum swing [sec]
l   = length from the fixed point at the top of the pendulum to the center of mass of the bob [m]
g   = gravitational constant (9.8 m/sec 2 )
π ≈ 3.14 (dimensionless constant)
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P   = period; i.e., the time for one pendulum swing [sec]
l   = length from the fixed point at the top of the pendulum to the center of mass of the bob [m]
g   = gravitational constant (9.8 m/sec 2 )
π ≈ 3.14 (dimensionless constant)
514350219773500 A simple pendulum consists of a mass called the pendulum bob suspended from a support by a thread. The time for a complete vibration is called the period ( T ) of the pendulum. When a pendulum swings through a small arc, its bob is undergoing simple harmonic motion. This investigation attempts to verify Galileo's early observation that the period of a pendulum depends only upon the length of the thread, also to verify that the acceleration due to gravity is 9.81 m/s 2 . The concept of oscillatory motion is used (DiracDelta.co.uk. ) . The equation related to this concept i s

Th e purpose of this experiment was to investigate whether the period of a pendulum is affected by the mass, length of pendulum or drop angle. The experiment tested, if the mass of the bob/drop angle was altered , then the period of the pendulum would be unaffected . Due to gravity, the larger the mass or drop angle, the more it will accelerate to compensate . if there was a relation between the period and length of the pendulum, then there would be a increase in the period.  A pendulum with a longer string has a longer period, meaning it takes a longer time to complete one back and forth cycle when compared with a pendulum with a shorter string (Swinging on a String - Lesson ) . Engineers (Seismologists as well) know that understanding the physics of how pendulums behave is an important step towards understanding all kinds of motion. Many other objects move back and forth regularly like pendulums, such as a weight bouncing up and down on a spring, and the back and forth movement of radio waves. In addition to using pendulums in clocks, engineers use them to detect earthquakes, measure how fast a bullet is flying, help buildings to resist earthquake shaking and help robots balance. In Taiwan's capital city, the Taipei 101 skyscraper has a giant 726-ton pendulum suspended over the 88th floor to counteract winds, reducing the building's sway and keeping motion sickness at bay (Swinging Pendulum - Activity ) .
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Pendulum bob
Pendulum bob 24098241206500 265747512065 2771775297815

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String00
String 25622261777900
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Materials and Method

Materials Procedure
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Mass
Retort Stand
Iron Ring Clamp
Ruler
Protractor
String
Scissors
Computer
Meter stick
Sensor
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Mass
Retort Stand
Iron Ring Clamp
Ruler
Protractor
String
Scissors
Computer
Meter stick
Sensor

Experiment should be setup according to the diagram (See Figure 1: Experimental Setup). The control variables were setup depending on experiment (See Graph 1/2/3). The independent variable was set up knowing that will change depending on experiment. Sampled for 10 periods/cycles using laser sensor. Found two periods recorded on the computer and subtract them from