30. Advance Illustration | Rigid Body Dynamics | A falling Rod on Ground | by Ashish Arora

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[shouryagupta]

This question can also be solved by finding angular acceleration at any general theta angle and then using alpha =omega (d omega)/d thetha

[abdullabohra-jm]

it was an simple wpe question
it could have been improved changing the density per unit length or giving it angular acceleration and adding some more small things like putting it on inclined

[mauriciobezerra]

I think Va will be sqrt(3g/l)*l and not sqrt(3gl)

[subhrajitdalai]

Q ) a rod of length l forming an angle theta with the horizontal strikes a frictionless floor at A WITH ITS CENTRE of mass vnot and no angular velocity.assuming that impact at a is perfectly elastic find angular velocity of rod immediately after impact.

I am having doubt in this question

[whenyouarebored]

as the rod falls wouldn't the mg provide torque about the point B...so energy wouldn't be conserved ??

[sonamkaurkhurana]

Really confused where to use anuglar momentum conservation, work energy conservation or torque at a

[prabhatkumarverma]

sir how would have we solved if friction will not be sufficient to prevent slipping of B....

[CristianoRonaldo-jj]

Why was work done by friction and normal force not taken into account???