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A rotating cylindrical rod of mass m=4 Kg and length l=1 meter is connected to a...

A rotating cylindrical rod of mass m=4 Kg and length l=1 meter is connected to a falling weight of 300 grams with a 2 meters string (Maximum distance covered by the falling weight). The distance from the wound string to the axis of rotation is 300 mm. The time taken by the falling weight to halfway is 2 seconds and to the bottom is 2.7 seconds.

Change of angular momentum in the spinning rod

Mass (Kg)

Moment of Inertial of Rod

I

(Kg.m2)

Angular Momentum at halfway

(Kg. m2)/s

Angular Momentum at bottom

(Kg. m2)/s

Difference

(Kg. m2)/s

0.3

Calculate the angular momentum of the rod at both the points (halfway and bottom).

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