Pathfinder - Challenging problem on Impulse and COE | A must Question for JEE Advanced Aspirants

[@piyushgupta725]

Sir your solving skill is just awsm , lagta hi nhi ki advance level question hai❤️

[@ryanologist099]

Sir please make a hierarchy of Chapters and Playlist for advanced 2022 topic we will follow those videos line by line ...

[@trader_9156]

Sachin sir OP 😊😊😊

[@trader_9156]

@@priyanshuchaudhary2453 #auther of pathfinder 🤞🤞🤞

[@ikeepwinning]

12:40 can any nice soul explain why the velocity would only change Direction and not magnitude? i mean why's the magnitude still the same v, would it not decrease because the string due to sudden tightness would cause a jerk or something? and secondly how should the angle be theta for the disc to reach trap? 😕

[@tejaskumar2235]

For the first part the initial direction of velocity will remain the same until the cord tightens again. As soon as it is tight, a velocity opposite in direction to the initial v cos theta starts acting on it(explained in previous slide). If you see carefully when the cord tightens again, v cos theta reverses(from dotted line to bold line(towards point B)) whereas v sin theta remains same for both dotted and bold lines as it never affected the direction of motion

[@tejaskumar2235]

For the second part check the previous slide it is the same thing just viewing from a different side ( also explained by me in the first answer). Hope it is clear.

[@ikeepwinning]

@@tejaskumar2235 thank you for explaining 😄, it's clear a lil more now

[@tejaskumar2235]

Final answer will be 30° as n=0.5 is given

[@karyanandsingh5957]

Nice qshn but too lengthy