Explain what happened in terms of conservation of angular mo

Explain what happened in terms of conservation of angular momentum. Get on stool first, then spin bicycle wheel Sit on the stool holding the bicycle wheel with the handles vertical and the wheel stopped With your feet off the floor (and on the stool\'s foot support), spin the wheel rapidly. In which direction is the wheel spinning (CW or CCW)? In which direction are you spinning (CW or CCWJ? With your hand, stop the wheel. What happens? Explain what happened in terms of conservation of angular momentum Spin bicycle wheel, then sit on the stool, then flip the wheel over sitting on the stool, hold the bicycle wheel with the handles and get it spinning In what direction is the wheel rotating (CW or CCW|? With the wheel already spinning and the handles vertical, sit on the stool. With your feet off the floor, hold one hand on the upper handle above the wheel, and the other hand on the lower handle below the wheel. Using both hands, flip the wheel over (so the lower hand/handle is now the upper hand/handle). In what direction do you now spin? In what direction does the wheel spin? Explain what happened in terms of conservation of angular momentum

Solution

1. The interaction is in between the boy and the wheel(the system) internally, and no external torque. So angular momentum will remain conserved. So if he tries to give the wheel a CW angular momentum thn he will be rotating CCW with equal magnitude angular momentum.

2. Here before sitting on the stool the system has a angular momentum, say CW. When flipping the angular momentum will remain conserved, so finally when he makes the wheel rotating CCW, he will be rotating CW.

-Avi(IST- 3:21 am, 8/4/16)