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Bhaskar Chakraborty Grade:
        

A slender stick of length 'L' and mass 'M' is lying on a smooth table and is able to move freely. A short impulse 'P' is imparted to it at a distance 'D' from the center and at right angle to the axis of the stick.  Find


1) Linear and angular velocity of the stick  immediately after impulse.


2) Angular displacement of stick after 't' sec from impulse.

7 years ago

Answers : (1)

askIITianexpert IITDelhi
8 Points
										

1.) Impulse P = Change in linear momentum = MV-0 = MV


V=P/M


Angular impulse PD = Change in angular momentum = Iω-0 = Iω


ω = PD/(1/2ML2) = 2PD/ML2


2.) Angular Displacement θ = ωt = 2PDt/ML2 rad.


There is no friction so there is no external torque & hence no angular accn.

7 years ago
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