Compound pendulum experiment lab report

Vibration Any motion that repeats itself after an interval of time is called vibration or oscillation. The swinging of a pendulum and compound pendulum experiment lab report 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 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.

Compound pendulum experiment lab report

By using our site, you agree to our collection of information through the use of cookies. To learn more, view our Privacy Policy. To browse Academia. There are many way of measuring this gravity acceleration, but the experiment of compound pendulum is the easiest and effective among them. In the experiment the acceleration due to gravity was measured using the rigid pendulum method. In this experiment the value of g, acceleration due gravity by means of compound pendulum is obtained and it is Which is a negotiable amount of error but it needs to be justified properly. In the course of basic physics, more precisely the course of classical mechanics should be understood as clearly as possible the subject of rotational dynamics for students of science and engineering, to have clarity with the issues concerning rotational dynamics, such as calculation of torque and forces applied to a moving system. This paper presents the implementation of a physical pendulum for the physics laboratory using mainly a bar and a disc mounted on it, which can be moved along this bar, using implements such as a flexometer to measure the different lengths and a stopwatch to take the oscillation period of the pendulum. This work shows the analytical development using the Simple Harmonic Motion S.

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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. Then we plotted a graph between T and G taking T on y axis and L on x axis. From this we calculated the value of g using the formula.

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. The practical was aimed at giving the students a proper understanding of what gyration is, what the theory behind inertia. Also, during the discussion of the practical, the students were taught how to derive the complex Time period T to gravitational acceleration g relationship for a compound pendulum which has been stated below. The mass of simple pendulum is concentrated in its bob while the mass of a compound pendulum is distributed evenly over its entire body.

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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At a determined height, the bob was allowed to make an impact with the larger metallic body to induce an electric current of which voltage was recorded by means of a voltmeter connected across the electrolytic capacitor. Now, balance the knife edge at wedge of clamp or stand. Simple Pendulum Simple Pendulum. Sign in. Carousel Previous. Gaziza Yeltay. After this we shifted to second hole and repeated the same procedure. The wire was passed over into connection with a chosen resistor in series with an electrolytic capacitor. A compound pendulum is used for measuring gravity acceleration. Note down the time for 30 vibrations two times. Search site Search Search.

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Best on the results findings, it showed that the Rafin Tambari has the highest value of acceleration due to gravity which is This research work is meant to investigate the acceleration due to gravity "g" using the simple pendulum method in four difference locations in Katagum Local Government Area of Bauchi State. M and experimental for the elaboration of the data collection and the realization of the laboratory with which the moment of inertia and the value of gravity could be obtained. This means that there are two positions of the centre of suspension on the same side of C. Lab 13 Compound Pendulum. Length of pendulum was calculated by this formula:. Uploaded by Numan Report this Document. Then we suspended the pendulum on a support. Amplitude of vibration should be kept small. Theory A pendulum exhibits simple harmonic motion SHM , which allowed us to measure the gravitational constant by measuring the period of the pendulum.