11
applying the equations when the collision
mr2/2(v/r)+r cosa mv=0
mrcos a =-mr/2
cosa=-1/2
so the answer is cos-1(-1/2) = 120°
disc rolls clockwise with angular speed w suddenly contacts a plane inclined at an angle a The value of a which could bring the disc immideately to rest on impact is
Please solve the ques
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3 Answers
111you are absolutely correct But please explain why have you written
r cosa mv
3SEE KARA ANG MOMENTUM CAN BE CONSERVED JUST AT THE BOTTOM OF THE INCLINE ........................ SO THE ANG MOM AFTER = 0 ANG MOM BEFORE IS WAT SINGH JI HAS RITTEN