Preview

lab projectile motion

Satisfactory Essays
Open Document
Open Document
324 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
lab projectile motion
Name __________________ Pendulum

Go to http://phet.colorado.edu/simulations/sims.php?sim=Pendulum_Lab

and click on Run Now.

1. Research to find equations that would help you find g using a pendulum. Design an experiment and test your design using Moon and Jupiter. Write your procedure in a paragraph that another student could use to verify your results. Show your data, graphs, and calculations that support your strategy.
The time it takes a pendulum to complete one back-and-forth swing, called the pendulum’s period, depends only on the pendulum’s length and the value of gravity. In an experiment, an experimenter can easily manipulate a pendulum’s length. The value of gravity cannot be manipulated.

The best way to find the gravity of a planet/moon using a pendulum would be to use the pendulum to find the time it takes to swing the length of a period. So we know two variables in the equation g=4π2L/(T2), where g is gravity, L is the length of the pendulum, and T is the period of the pendulum. Thus, we can easily find gravity. Do at least 10 trials with varying lengths, but always starting the pendulum at fifteen degrees. Record the Length (L) of the pendulum, the time to complete a period (T) in seconds, and T2 (just to make it easier to plug into the equation later) for each trial.

Either take the average of the gravities found after plugging in L and T2 or you can plot a line of best fit to determine the gravity of a planet/moon and get rid of any outliers.

Moon:
|Trial |Length of the Pendulum (L) |Time to complete period (T)|T2 |Gravity (g) | |1 |2.00 m |6.91 s |47.7 |1.66 m/sec2 | |2 |1.40 m |5.78 s |33.4 |1.65 m/sec2 | |3 |1.25 m |5.46 s |29.8 |1.66 m/sec2 | |4 |1.92 m |6.77 s...

2. Use your procedure to find g on Planet X. Show your data, graphs, and calculations that support your conclusion.

3. Give your conclusion and write an error analysis.

You May Also Find These Documents Helpful

  • Satisfactory Essays

    The Claw

    • 474 Words
    • 2 Pages

    Trigonometry was used in order to calculate the unknown length of the arm of the claw.…

    • 474 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Lab 5

    • 1158 Words
    • 7 Pages

    To calculate the acceleration due to gravity by observing the motion of a pendulum. To investigate the effect of varying mass on the period of a pendulum. To investigate the effect of varying the length of a pendulum on the period…

    • 1158 Words
    • 7 Pages
    Good Essays
  • Powerful Essays

    Defying Gravity

    • 1542 Words
    • 10 Pages

    Aim/ hypothesis: The aim of this experiment is to determine Galileo’s theory of gravity that objects of different masses that are dropped from the same height will reach the ground at the same time. It is predicted that Galileo’s theory will be proved correct and that the masses tested…

    • 1542 Words
    • 10 Pages
    Powerful Essays
  • Good Essays

    P6 Giancoli 4th Ed

    • 2929 Words
    • 12 Pages

    A pendulum clock works using gravity. Gravity pulls the mass towards the equilibrium position at the bottom. Suppose your high altitude results in gravity being 1/10 what it was at sea level. Using F=ma, we see that the force due to gravity is smaller, mass is constant, so acceleration must decrease. Since the pendulum cannot accelerate as quickly, it cannot reach the maxima on either side of the equilibrium as quickly, resulting in a loss of time. (The clock runs slower)…

    • 2929 Words
    • 12 Pages
    Good Essays
  • Good Essays

    - string (180 cm) – to be tied to the weight to make the pendulum…

    • 1142 Words
    • 5 Pages
    Good Essays
  • Good Essays

    In this investigation, I will be looking at which factors affect the period (The time for one complete cycle, a left swing and a right swing) of a pendulum (a weight that dangles from a pivot so that it can swing freely). I will do this by tying a metal bob to a length of spring and dropping it from a certain height and measuring the time it takes to complete an oscillation, changing a variable for each of my preliminary investigations.…

    • 2172 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Barton's Pendulum

    • 4114 Words
    • 17 Pages

    for any spring, and varies from spring to spring. In formulaic terms. . The unit for thisd quantity is newtons per metre. Substituting the above equation (Hooke's Law) into the equation, , and therefore, . g here is the acceleration due to gravity, as the force on the spring consists of the weight of the bob. On the moon, the time period of the pendulum would change, as l is a constant where as g would change, where as the time period of the spring would stay constant, as is a constant, and x changes proportionally to g.…

    • 4114 Words
    • 17 Pages
    Good Essays
  • Powerful Essays

    Physics Ia

    • 1119 Words
    • 5 Pages

    The purpose of this experiment is to investigate the relationship between density and time in a homemade pendulum. In order to investigate the phenomenon, the density of the hanging object is going to change, and by recording the time it takes the object to complete a period hanging from the pendulum. According to pendulum’s theory, the period should be the same because the force is restored due to gravity that will accelerate it and should bring it back to equilibrium position, however the period may be longer if the object is denser because it is having more speed as it goes through therefore will travel more distance and time consequently.…

    • 1119 Words
    • 5 Pages
    Powerful Essays
  • Powerful Essays

    Physicals Essay

    • 2793 Words
    • 12 Pages

    Our experiment is to investigate the time it takes for an object to free fall and from our results work out a value for gravity. The experiment will include us dropping a golf ball from a different height and measuring the time it takes to pass through a light gate.…

    • 2793 Words
    • 12 Pages
    Powerful Essays
  • Powerful Essays

    Pendulums

    • 10171 Words
    • 41 Pages

    When a pendulum is displaced from its resting equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position. When released, the restoring force combined with the pendulum 's mass causes it to oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, is called the period. A pendulum swings with a specific period which depends (mainly) on its length. From its discovery around 1602 by Galileo Galilei the regular motion of pendulums was used for timekeeping, and was the world 's most accurate timekeeping technology until the 1930s.[2] Pendulums are used to regulate pendulum clocks, and are used in scientific instruments such as accelerometers and seismometers. Historically they were used as gravimeters to measure the acceleration of gravity in geophysical surveys, and even as a standard of length. The word 'pendulum ' is new Latin, from the Latin pendulus, meaning 'hanging '.[3]…

    • 10171 Words
    • 41 Pages
    Powerful Essays
  • Satisfactory Essays

    A Simple Pendulum

    • 617 Words
    • 3 Pages

    The purpose of this experiment is to study how the period of a pendulum depends on length, mass, and amplitude of the swing.…

    • 617 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Physic

    • 10458 Words
    • 42 Pages

    Hypothesis: The longer the length of a simple pendulum, the longer the period of oscillation. Aim of the experiment: To investigate how the period of a simple pendulum varies with its length. Variables: Manipulated: The length of the pendulum, l Responding: The period of the pendulum, T Constant: The mass of the pendulum bob, gravitational acceleration Apparatus/Materials: Pendulum bob, length of thread about 100 cm long, retort stand, stopwatch Setup:…

    • 10458 Words
    • 42 Pages
    Good Essays
  • Satisfactory Essays

    Hooke's Law Experiment

    • 775 Words
    • 4 Pages

    7- Calculate the weight of each mass by multiplying the mass in kg and the gravitational field strength, which is g, since the force in this experiment is weight.…

    • 775 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    Universal Gravitation

    • 1109 Words
    • 5 Pages

    * Describe how changes in the masses of two objects affects the gravitational force between them. (Explorations 1, 2, and 3)…

    • 1109 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Hypothesis: The longer the length of the simple pendulum, the longer the period of oscillation will take.…

    • 704 Words
    • 3 Pages
    Satisfactory Essays