PPT-Center of Mass J P SINGH

Dept of Physics PGGC11 Chandigarh Center of Mass The terms center of mass and center of gravity are used synonymously in a uniform gravity field to represent the unique point in an object or system which can be used to describe the systems response to external forces and torques The concept of the center of mass is that of an average of the masses factored by their distances from a reference point In one plane that is like the balancing of a seesaw about a pivot point with respect to the torques produced. 33 Solution Strategy Work Problem 2 1049 Solution Strategy Work Problem 3 1059 Solution Strategy Work brPage 3br Center of Mass Center of Mass is defined by the 3 rd Edition Ohanian as the average position of the mass of the system Mathematically it ROLL NO. 28 ADITYA KUMAR JAGDEV SINGH HOUSE NO 177 TIGI PUR PO BAKHTAWAR PUR DELHI 110036 ROLL NO. 29 RAJVIR MAHENDER SINGH 1/4022-A RAM NAGAR EXT LONI ROAD SHAHDARA, DELHI 110032 ROLL NO. 3 By . Daljit. . Nagra. shoppers. quiet. daddy’s shops. web. mouse. effing. mum. cry. midnight hour. moon baby. crew cut. milk. bride. mop. chapatti. made luv. Singh. precinct. chocolate bars. like a drunk. Rocket Science and Physics. Background and Hypothesis. Functions of rocketry were developed through many years of trial and error. Hypothesis:. If we make a rocket that will fly higher than the Campanile, then the rocket’s . Linear Momentum. Momentum is a measure of how hard it is to stop or turn a moving object.. p. = m. v. (single particle). P . = . Σ. p. i . (system of particles). Problem:. How fast must an electron move to have the same momentum as a proton moving at 300 m/s?. Output: Stack them leaning as far over as possible.. Input: Lots of 2in wide blocks. More of the output?. With out falling. How far over can you shift it go over?. Leaning Tower. Output: Stack them leaning as far over as possible.. Torque. Center of Mass. When analyzing the motion of an extended object, we treat the entire object as if its mass were contained in a single point, known as the object’s . center of mass (CM).. Mathematically, the CM of an object is the weighted average of the location of the mass in an object.. Chapter 9. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 9-1. Center of Mass. Motion . of rotating objects . is complicated. T. here . is a special point . for . which . motion . Uniform Objects. C of M is located in the center of the object. Calculating the Position of the Center of . Gravity or Center of Mass. Calculating the Position of the Center of . Gravity or Center of Mass. 100 kg. 75 kg. F = G (m. 1. m. 2. / r. ²). m. 1. = 100 kg. m. 2. = 75 kg. r = 2 m. 2 m. F = 6.67 x 10 . –11. . Nm. ²/kg² . (100kg * 75kg) / (2m)². = 1.25 E -7 N. UGA EXAMPLE 1. Two particles are separated in space with a center to center distance of 0.478 m. The mass of A is 365 kg and the mass of B is 765 kg. Find the magnitude and direction of the net gravitational force acting on the particles.. What determines whether an object will rotate when a force acts on it? . Why doesn’t the Leaning Tower of Pisa rotate and topple over? . What maneuvers does a falling cat make to land on its feet? . Up to this point in the course we have treated everything as a single point in space, no matter the mass, size, or shape. We call this “special point” the . CENTER OF MASS. . The . CoM. is basically a coordinate which represents the average position of the mass.. April 5. th. 2012. Aarti Mistry. Definition. ‘. Bharata. ’ is derived from the three syllables meaning . BHAva. (. expression. ), Raga (. music. ), . TAla. (. rhythm. ), ‘. Natyam. ’ means dramatic art.. : Obstetrics and . Gynaecology. Current Designation: Assistant Professor, Department of Obstetrics and . Gynaecology. , University College of Medical Sciences and associated Guru . Tegh. . Bahadur. Hospital, Delhi, India..