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10 QA on moment of inertia | Learn Physics

10 Question-Answer on moment of inertia 1.        Moment of inertia of a uniform circular disc about a diameter is I. Its moment of inertia about an axis └ to its plane and passing through a point on its rim will be: (a)     5 I (b)    3 I (c)     6 I (d)    4 I Ans :( c) 2.        The moment of inertia of a body about a given axis is 1.2 kg m 2 Initially, the body is at rest .In order to produce a rotational kinetic energy of 1500 joule, an angular acceleration of 25 radian/s 2 must be applied about that axis far a duration of : (a)     4 sec (b)    2 sec (c)     8 sec (d)    10 sec Ans: ( b) 3.        A hoop o mass M and radius R is suspended on a peg in a wall. Its moment of inertia about the peg is : (a)     2MR 2 (b)    MR 2 (c)  ...