v1v2=2sinθ
 Akash Anand Wrong answer..Upvote·0· Reply ·2014-02-23 22:12:17 Akash Anand Wrong answer..Upvote·0· Reply ·2014-02-23 22:12:17
 
v1v2=2sinθ
 Akash Anand Wrong answer..
Akash Anand Wrong answer..
Where am i going wrong, sir?
 Akash Anand Simply take the length of the spring as constant, that will help.
Akash Anand Simply take the length of the spring as constant, that will help. Aditya Agarwal but, sir that is what i have done.
due to movement of 2 a dist. x to the right, at that instant,
the length of the string will increase by 2.x.(csc(theta)) 
and because of movement of 1, it will decrease by y
now differentiating,
-v1 + 2.(v2).csc(theta) = 0.
Aditya Agarwal but, sir that is what i have done.
due to movement of 2 a dist. x to the right, at that instant,
the length of the string will increase by 2.x.(csc(theta)) 
and because of movement of 1, it will decrease by y
now differentiating,
-v1 + 2.(v2).csc(theta) = 0.
 Akash Anand By your approach, x and y both are changing, and the statement that you are making that movement of 2x will increease the length by 2x cosec theta is wrong. Think about it.
Akash Anand By your approach, x and y both are changing, and the statement that you are making that movement of 2x will increease the length by 2x cosec theta is wrong. Think about it.