Two thin circular discs of mass m and 4m,having radii a and 2a,respectively,are rigidly fixed by a massless,right rod of length l = root(24a) through their center. This assembly is laid on a firm and flat surface,and the set rolling without slipping on the surface so that the angular speed about the axis of rod is w . The angular momentum of the entire assembly about the point 'O' is L .Which statement is/are true
a) the magnitude of angular momentum of the assembly about its center of mass is 17ma^2w/2
b) The magitude of the z-component of L is 55 ma^2w
c) The magnitude of angular momentum of center of mass of the assembly about the point O is 81 ma^2w
d)The center of mass of the assembly rotates about the z-axis with an angular speed of w/5
Jee Advanced - 2016
kvnmurty:
pls attach the picture. perhaps the solution depends on the way they are connected.
l = root(24) a ? or root (24 a) ?
root(24)a
is ang momentum about axis of point ?
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A) is true
B) is false
C) is false
D) is true.
For detailed explanation, diagrams and calculations please see:
B) is false
C) is false
D) is true.
For detailed explanation, diagrams and calculations please see:
http://brainly.in/question/858129
http://brainly.in/question/857974
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