 Please write down the question, you need to find, it's not everybody, let's just write I'll give you another chance. One by twelve. One full revolution is two by two means one full circle. Twelve hours. Sixty minutes. Sixty seconds. When it's time. When we divide it, see. Okay, just one more question, then you can take away. All of the emotion is there. And change in velocity going from point B to point Q. The radius is up. It's not changing. Speed is not changing. Change in speed is zero. Change in velocity is not zero. Now you can ask it. It's just minus two. For it. Take apart. Then I get. Then you just draw. No, there is no. Angularization. Can you see the circle? How much? Seven seconds. Two pi r, five nine. Two pi r, five nine. Two pi r, five nine. Two pi r, five nine. Two pi r, five nine. Get the answer immediately. It's an axisless triangle. Two sides, length is given. V and V, triangle between them is given. Can you find the third side? Use it. This is the earlier velocity. Change in velocity. This is change in velocity. This is 14. Is this axisless triangle? It's half of this complete length. Which is of what? This is 20 degrees. So this length will be. Hypotenuse is V. This is 90 degrees. It will be V sine 20. Total length will be 2 V sine 20. This is the answer. All the way. Same. What? 90 degrees of velocity is same. Hold it. This is constant angular acceleration. You have to use those three equations. Here is the question. When a seeding fan is switched off, It is totally irrelevant. When a seeding fan is attached, it is angular lost. Omega naught is not even. What was the initial angular lost? You need to find out how many further revolutions it will make before coming to rest. It is a variation. It is a very simple straight forward. What? Done? Which equation? Which equation? It is this addition. For one rotation, it is 2.5. For another rotation, how much it will be? 36 into 2.5. Delta theta. Basically, you have two situations. Omega, this will propose the scenario. What is this? What? Venotation. Okay. Others? 24 is also wrong. Yes. 12. Answer is 12. How do you write 2 alpha delta theta? So for this situation, how should I write the equation? Omega naught. Where does it go to omega naught? Wait, wait, wait. This is the final angular lost. Which is omega naught by 2. So omega naught squared by 4. Omega naught squared. It is this minus alpha. Even if you write plus alpha, it is 6. It is okay. Now, delta theta is how much? 5. It is 36. Yes or no? 36. Rotations. Okay, let's see. Guys, focus here. In the second case, initial one is omega by 2 is minus 2 alpha into delta theta. I don't know what is delta theta naught. But in this and this point, that is delta theta. Okay? So here I am getting omega naught squared by 4 is equal to 2 alpha delta theta. Okay? So using that equation. Using this equation, I am getting 3 times omega naught squared by 2 pi into 36. Okay? So 3 times of that is equal to that. So you will have 6 into 2 pi. This is 12. So delta theta is... All right? Now, the promotion. Now, because the promotion if we continue, it will never end. And this is... This circle motion discussion will again happen when we will... So, we will talk about circle motion again in the rotational motion chapter. Okay? Now, I would request that if you are really serious about your studies, you could solve some, you know, 40-50 questions on circle motion right now itself. So that when that chapter comes, it will be a very easy thing to do. Okay?