Advance Illustrations - Projectile Between Inclined Planks | Kinematics #31 for JEE Advanced

What differentiates JEE Advanced from JEE Mains is multi concept questions so it is very important for JEE advanced aspirants to practice various illustrations.
This advance illustrations series is an excellent run through types of questions asked in JEE Advanced.
In this video Ashish Arora Sir has taken up a case of Projectile Between Inclined Planks.

Watch Advanced Illustrations Kinematics videos on various concepts:

#jeeadvance #jeephysics #pgAdvIllustrations #pg4jeeadv #kinematics #rectilinearmotion #projectilemotion

[mgkxyz]

I'm still searching for the guy who said that these illustrations are easy and basic in the beginning of the playlist

[anantgyansinghal]

3:12 sir if you have taken below x axis negative so usintheta should also be negative as it is downward about x axis

[vaibhavmourya]

what if u solve by equation of trajectiory takes first plank bottom as origin and point where projectile grazes as planklentgh*cosalpha, , sinalpha
..is it conveinent to do sir

[prateekrawat]

Respected Sir, Are advanced illustrations enough or we have to practice more from somewhere else??

[aayushjha]

Sir, here ball hits normally to the plane and plane is at an angle alpha with horizontal...then why the velocity at point N in vertical is must be zero at a point when it is parallel to horizontal and not when it is at an some angle with horizontal ??

[devondevon]

sir can do it by extending the projectile backwards and changing the reference frame.

[jathinm]

am i the only one not getting these questions ]:

[kuldeep]

i did this one by equationg time of flight for along the wedge and perpendicular to wedge motion

for along the wedge I did the same final velocity 0 and initial as v cos (theta - alpha) and acceleration as g sin(alpha) , then for perpendicular to wedge first calculated time to reach max height then from max height to wedge, then equated both the times and got the same answer :))

[NoToRiOuus]

stupid of me taking reference x axis perpendicular to planes and complicating the whole matter manifold
anyway superb question and equally great explanation