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 2 years 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
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357204606212:dw

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

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

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

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

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

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

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

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