- #1
subhradeep mahata
- 120
- 13
Homework Statement
Two particles A and B are connected by a rigid rod AB which slides along two mutually perpendicular rails as shown.
H is the angle between point B and the horizontal rod. At an instant, when H=30°, the velocity of B is 10m/s towards left, and velocity of A is upwards. Find the velocity of A at that instant.
Homework Equations
The Attempt at a Solution
Now, I don't know if it is a rubbish method or not, I tried to solve it by forming a vector triangle as shown.
(where Vb and Va are velocities of B and A at that instant)
Now, Va=Vb * tan 30° = 10/√3 m/s
But the correct answer according to my book is 10√3 m/s.
I don't want you to post the exact solution, but I request you to point out what went wrong in my method. Thanks.