University of Kentucky, department of Physics and Astronomy Physics 241. “Experiment 5 Rotational Dynamics.” Labatory Manual. Serway, Chapter 10, (rotational motion), sections 10.1-10.6.Retrieved November 21, 2014, from (mechanics) By applying Newton’s Second Law we get this equation ġ TI-CBR ( Calculator Based RANGER ) Measuring the mass of each and multiplying it to the position vectors of each. The equation for inertia of a rigid body would be Įach part of the body was divided into different parts. The very first step in this experiment was to find the moment of inertia. Now repeat these steps for your different weights 0.100kg, 0.150kg, 0.200kg, and 0.250kg Let the weighted hanger fall at the same time that you begin the CBR in order to record the data points.Now spool up the string, make sure there are no overlaps and attach the.Since the CBR is only accurate at distances greater than 0.5 meters, the CBR must be arranged that distance or greater from the platform so it can record the motion as the platforms makes a lap around.After enough paper clips are added, use the triple beam to weigh the mass of the paper clips.Attach paper clips to the end of the string so the platform will move with constant velocity when pushed slightly.Spool the string around the rotor being careful not to let rope overlap the rotor cylinder.Put the rotor apparatus near the edge of the table so the weights dont hit the table, begin to level the rotor apparatus by using the carpenter level.Check to make sure the rotor apparatus is set up in the same order as it is in part 1 and the components are in the same position.Take a picture or memorize how the rotor apparatus appears so that when conducting part 2 the experiment is set up in the exact same way with the parts in the same position for part 1.Reset the rotor, and the blocks in original position after measuring.For any parts that can’t be weight directly, analyze its dimensions/density to figure out the mass.Measure/ weigh each part of the rotor as necessary.First disassemble the rotor to measure the individual parts/components.three)ĭetermine the Rotor’s Moment of Inertia from Masses and Geometries. Rotational motion is explained by Newton’s Second Law, and it states the acceleration of an object is dependent upon two variables, the net force acting upon the object and the mass of the object (see ref. In this experiment we got to find the moment of Inertia of the rigid motor using masses, and measuring its parts geometry. Instead of using the traditional symbols for velocity, acceleration, displacement, and theta we use symbols for angular velocity, angular acceleration, and angular displacement. The definition of rotational dynamics would be the study of forces and torques and their effect on motion, as opposed to kinematics (see ref. In this lab, we got to experiment with rotational dynamics. Literature Review / Dissertation Chapters
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