18. Two thin circular discs of mass m and 4m, having radii of a and 2a,...
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18. Two thin circular discs of mass m and 4m, having radii of a and 2a, respectively, are rigidly fixed by a massless, rigid rod of length 1 = √24 a through their centers. This assembly is laid on a firm and flat surface and set rolling without slipping on the surface so that the angular speed about the axis of the rod is (0. The angular momentum of the entire assembly about the point O' is L (see the figure). Which of the following statement(s) is (are) true? 4 (2016 Adv.) O Co (a) The magnitude of the z-component of L is 55 ma ² (b) The magnitude of angular momentum of centre of mass of the assembly about the point O is 81 ma'o/ (c) The centre of mass of the assembly rotates about the Záxis with an angular speed of 5 (d) The magnitude of angular momentum of the assembly about its centre of mass is 17 ma 2 The figure che 18. Two thin circular discs of mass m and 4m, having radii of a and 2a, respectively, are rigidly fixed by a massless, rigid rod of length 1 = √24 a through their centers. This assembly is laid on a firm and flat surface and set rolling without slipping on the surface so that the angular speed about the axis of the rod is (0. The angular momentum of the entire assembly about the point O' is L (see the figure). Which of the following statement(s) is (are) true? 4 (2016 Adv.) O Co (a) The magnitude of the z-component of L is 55 ma ² (b) The magnitude of angular momentum of centre of mass of the assembly about the point O is 81 ma'o/ (c) The centre of mass of the assembly rotates about the Záxis with an angular speed of 5 (d) The magnitude of angular momentum of the assembly about its centre of mass is 17 ma 2 The figure che
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Related Book For
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell
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