Question

Rotational K.E of a body is 10 J. If the angular
momentum vector coincides with the axis of
rotation and its M.I about this axis is 5
then its angular momentum is​

Answer 1

Answer:

Rotational K.E=1/2Iw² (w=angular velocity)

                10=1/2 x 5 x w²

                20=5w²

                4=w²

               w=2

Thereforce, Angular momentum L=Iw

                                                        =5 x 2 = 10 kg m/s

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Answer 2

Answer:

The aanswer is 10 kg m/s

Explanation:

Rotational K.E=1/2Iw² (w=angular velocity)

    10=1/2 x 5 x w²

     20=5w²

       w=2

Therefore,  Angular momentum L=Iw

=5 x 2 = 10 kg m/s

Angular momentum is defined as: The assets of any rotating object given by means of moment of inertia instances angular velocity. it's miles the property of a rotating body given by the made from the moment of inertia and the angular speed of the rotating item.With a bit of a simplification, angular momentum (L) is defined as the space of the object from a rotation axis extended by way of the linear momentum: L = r*p or L = mvr.

Linear momentum is a assets of objects which might be converting their role with respect to a reference point. Angular momentum is a property of gadgets which are changing the attitude in their position vector with recognize to a reference factor.

The turning impact of a force is referred to as Torque. The angular momentum of the frame is described as the moment of momentum about the axis of rotation. The relation between Torque & angular momentum is L=ατω remedy any query of systems of particles and Rotational movement with:- patterns of issues.

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