Rotational Mechanics || Advanced Problem || tipping over an obstacle

A solid cube of side 2a and mass M is sliding on a frictionless surface with uniform velocity v. It hits a small obstacle at the end of the table that causes the cube to tilt. Find the minimum value of the magnitude of v such that the cube tips over and falls off the table. Advanced problems Playlist
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[@alphaiitd1]

Beautiful illustration

[@souravdey8236]

Why u don't taken initial kinetic energy....1/2mv^2

[@PhysicswithAkashGoyal]

Try to understand what are the initial and final positions taken here to apply energy conservation. initial is just after collision and final is when CM is just above the ridge. you can't conserve energy from very beginning as there is collision involved in between which causes loss in energy.

[@shivanayudu5715]

i got same doubt

[@JEE-zm3sh]

Sir Intutively its fine.. But how to establish that the block after collision gets into pure rotation about the collision point?

[@user-xt5kf6sl5v]

Think of it like the block got attached to a hinge

[@shivanayudu5715]

thank you sir

[@mayankag2277]

Sir solid cube ka ma2\6 kaise hoga wo to square plate ka hota h n? Moment of inertia

[@PhysicswithAkashGoyal]

Just like solid cylinder and disc have same moment of inertia as distribution of mass around the axis is same for both. You compress the solid cylinder it will be a disc... A disc is basically a solid cylinder of negligible height... Similar is the case with cube and plate

[@mayankag2277]

Sir hollow cube ka is tarah se likh skte h kya ?

[@musicloverr547]

Best

[@aryansudan2239]

done

[@atmanirbharofficialindiaon2789]

Griet vedio ser