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A lamina is made by removing a small disc of diameter  from a bigger disc of uniform mass density and radius , as shown in the figure. The moment of inertia of this lamina about axes passing through  and  is  and , respectively. Both these axes are perpendicular to the plane of the lamina. The ratio  to the nearest integer is


Question ID - 101415 :-

A lamina is made by removing a small disc of diameter  from a bigger disc of uniform mass density and radius , as shown in the figure. The moment of inertia of this lamina about axes passing through  and  is  and , respectively. Both these axes are perpendicular to the plane of the lamina. The ratio  to the nearest integer is

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Answer Key : (3) -

(3)



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A light inextensible thread is wound round a solid cylindrical reel of mass  kg and radius 10 CM. The end of the string is held fixed and the reel is allowed to fall so that the thread unwinds. If the axis of the reel remains horizontal the tension in the thread will be  What is the value of ‘*’


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