Compound pendulum experiment lab report

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Vibration Any motion that repeats itself after an interval of time is called vibration or oscillation. The swinging of a pendulum and the motion of a plucked string are typical examples of vibration. The mass of string is negligible in comparison to the bob. Under these conditions, the mass of the bob may be regarded as concentrated at its centre of gravity, and the length of the pendulum is the distance of this point from the axis of suspension. A rigid body mounted upon a horizontal axis so as to vibrate under the force of gravity is a compound pendulum.

Compound pendulum experiment lab report

A pendulum exhibits simple harmonic motion SHM , which allowed us to measure the gravitational constant by measuring the period of the pendulum. We plan to measure the period of one oscillation by measuring the time to it takes the pendulum to go through 20 oscillations and dividing that by We constructed the pendulum by attaching a inextensible string to a stand on one end and to a mass on the other end. The mass, string and stand were attached together with knots. The uncertainty is given by half of the smallest division of the ruler that we used. We repeated this measurement five times. We transcribed the measurements from the cell-phone into a Jupyter Notebook. This was calculated using the mean of the values of g from the last column and the corresponding standard deviation. This is consistent with the fact that our measured periods are systematically higher. We also worry that we were not able to accurately measure the angle from which the pendulum was released, as we did not use a protractor.

Expt 3, Final Expt 3, Final.

Then we suspended the pendulum on a support. After this we slightly displaced the pendulum from its mean position through a small angle and released it so that it could vibrate. We measured the time of 10 vibrations and distance from center of gravity to the hole i-e the axis about which the pendulum vibrated. After this we shifted to second hole and repeated the same procedure. Then we calculated the time period T for each hole.

By taking values of time period T for one oscillation, we had to plot a distance D to time period T graph. Taking values from the graphs and known formulas, we were able to find the value of gravitational acceleration g and the error in our value. We were also able to calculate the theoretical radius of gyration k and moment of inertia I using the stated derivation of this report. We made sure to take multiple reading whereby we were able to obtain an average reading for all desired values. Now students were to acquaint themselves with the theory of compound pendulum. The practical was aimed at finding the experimental value of gravitational acceleration g and then finding error in our obtained value. It was also aimed at finding the mean radius of gyration k and mean moment of inertia I of the given pendulum.

Compound pendulum experiment lab report

A pendulum exhibits simple harmonic motion SHM , which allowed us to measure the gravitational constant by measuring the period of the pendulum. We plan to measure the period of one oscillation by measuring the time to it takes the pendulum to go through 20 oscillations and dividing that by We constructed the pendulum by attaching a inextensible string to a stand on one end and to a mass on the other end.

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Carousel Previous. The amplitude of oscillation should be small. Original Instructions Original Instructions. Lecture Notes Lecture Notes. We measured the time of 10 vibrations and distance from center of gravity to the hole i-e the axis about which the pendulum vibrated. Go back to previous article. Conclusion: Gravity acceleration is caused because of the massive body and mass of earth which can be used in many purposes, because acceleration is one of the major fact and element of force. Uploaded by Waqas Muneer Khan. Vibration Any motion that repeats itself after an interval of time is called vibration or oscillation. The uncertainty is given by half of the smallest division of the ruler that we used. Both knife-edges should be shifted to the corresponding holes for each observation to keep the position of C.

It seems a mysterious and even a magical force. Magnetism's ability to serve mankind especially lies in its relationship to electricity. That means, magnetism and electricity are so closely related to each other.

Skip carousel. The expression of L can be written as a quadratic in l. Length of pendulum was calculated by this formula: Value of g was determined as: Moment of inertia was calculated by: PROCEDURE Balance the pendulum on the wedge, with knife-edges at the extreme holes on both sides,and mark the position of its centre of gravity at G. Iec Iec Then we calculated the time period T for each hole. Download now. A vibration should be counted wherever the reference line on the pendulum crosses the vertical cross-wire of the telescope. Phy 11 Phy Journal of European Integration Partners at Paris? Note down the time for 30 vibrations two times. Jump to Page. By using our site, you agree to our collection of information through the use of cookies. In this experiment the value of g, acceleration due gravity by means of compound pendulum is obtained and it is The formula indicates, the value of gravitational acceleration is directly proportional to the working length of given pendulum and inversely proportional to the square of the period of time of it. Time period T for a compound pendulum is given by:.