33I got a very ajeeb answer μ=tanθ.....
In the diagram below, The ball hits the billiards table and returns back in the same direction.
If the angle of hitting the wall is θ from the vertical. Find the minimum coefficient of friction between the wall and the ball.
Given coefficient of restitution is "e"
assume initial velocity if needed :)
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10 Answers
33Just returned frm school and in one look i said that.... Ok let me take pen and copy...
62lol.. yes priyam u are right :)
that was only to confuse u :P
good work
62lol.. yeah..
when i was giving this question.. i was thinking of ur statement about mu and tan theta :)
33Yeah they r always tanθ....But i know sumtimes it can betray any one...
actually here what i thought that only direction has to reversed then e will not affect as speed can change...
and for an extreme case when theta=pi/2 no mu can do that so then came the one and only tanθ capturing every real no and giving just the right hint for pi/2........
:)
1Great Abhishek;
I just returned frm school and saw the question.
I also calclated tan θ and then i read your answer and manishsh's comment. I was also a little confused.