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 one year ago
A cube of side x is moving with velocity u on a horizontal smooth plane. There is a ridge at O.
find angular speed of the cube after it hits O
 one year ago
A cube of side x is moving with velocity u on a horizontal smooth plane. There is a ridge at O. find angular speed of the cube after it hits O

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shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.0dw:1357204606212:dw

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.0i know angular momentum will be conserved here but unable to apply it..

Diwakar
 one year ago
Best ResponseYou've already chosen the best response.0Apply the conservation of energy. Mu^2/2=Iw^2/2 where I is the moment of inertia about the vertical edge about which it will rotate.

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.0so, mu^2 = 2/3 (mx^2) * w^2 w^2 = 3u^2 /2x^2 nopes , not the right ans why you used cons of energy ?

Diwakar
 one year ago
Best ResponseYou've already chosen the best response.0Are you sure you are getting the I right?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.02/3 mx^2 ..i googled it! though i can derive that also..

Diwakar
 one year ago
Best ResponseYou've already chosen the best response.0what is the correct answer? I will try to solve it at some other time?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.0though that was an option which came by this method, correct ans is 3u/2x

Diwakar
 one year ago
Best ResponseYou've already chosen the best response.0@yrelhan4 Did you use Mux/2=Iw

yrelhan4
 one year ago
Best ResponseYou've already chosen the best response.1yup.. I would be icm + ma^2/2

VincentLyon.Fr
 one year ago
Best ResponseYou've already chosen the best response.1Use conservation of angular momentum, not of kinetic energy.

VincentLyon.Fr
 one year ago
Best ResponseYou've already chosen the best response.1Moment of inertia about edge is correct.

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.0ohh yes,,3u/4x..got it,,was easy..hmm
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