1is d ans v + rw??
3 Answers
1q:the free end of a thread wound on a bobbin of inner radius r and outer radius R is passed round a nail A hammered into a wall as shown. The thread is pulled at a constant velocity v . Find the velocity v0 of the centre of the bobbin at the instant when the thread forms an angle a with the vertical, assuming that the bobbin rolls over the horizontal surface without slipping.