Coefficient of static Friction || block and horizontal surface #11thphysics @a2zpractical991

Hello friends and welcome to my channel. So friends, I'm Sachin Shukla and you are watching A2J Practical. So, friends, today's experiment is physics experiment number 5. Coefficient of Static Friction Basically, what we are going to do here is that we have a wooden board. You can see a pan. With this, we will apply weight to it and see how much weight this wooden block can bear. Friction occurs on this surface and moves downward. So as soon as it moves down, we will write the weight here and here at that time. We will plot a good graph of it and see what the result is. So let's begin the experiment. So, friends, now this is a weighing machine. And what we have to do is measure this pan and this wooden block. So let's measure it first. Because our first point of observation is that we must determine the mass of this block and the mass of this pan. Now it is displaying some value. You tear it from here. What you have to do now is measure the mass of that block. So I keep it here. So its mass is basically 63.34. Now let's see the mass of this pan. So I'll keep this pan here. Its weight is 23.0. First of all, you must weigh both of them so that you can record the weights in the observation. So I have weighed it. I will tell you how to write it. So let's begin the experiment. So, friends, we have a box. It is given to you in colleges. It contains all the weighing weights. As you can see, this is the weight of 1 gram. 2 grams, 3 grams, and you can see this is 9 grams. You have also been given a weight in this box in milligrams. You can also calculate it from small, very small. So basically what I'm going to do is determine its weight starting from 1 gram, 2 grams. So what do you have to do? Friends, I will tell you. This is a block. It's a pan below. We have to put it on top of this pulley. As it is. You are seeing this. I've put it here. And you have to fix it like this. Can you see this? It is free from any friction. I mean, it is not moving at all. It should not be in motion. Otherwise, it might be incorrect for you. If this is occurring in your movement, then there is a screw here. You can see it by tightening it slightly. Second thing. Once again, I am telling you that whenever you place it, there is no weight here and no weight on the pan below. So these two should not be in motion. You must be seeing the observation. What is written in this observation? Mass on the block W1. So which mass will come here? You have to write here. Total weight Total weight means W. W0 plus W1 is written. So what is your W0? The weight of the block here. How much did we get? 63 came. I will tell you this. You have to add it. Then, cook the mixture in the pan. Third column This pan. I mean, our pan is below. You won't be able to see it now. But I will show you. Whatever weight comes into the pan, you must write it down there. Add it to the pan and write next to it. And we will see all of this. So let me begin. I will write all the readings in one place. Then I will tell you everything slowly. What am I going to do now? Take 1 gram from here. So first you have to pick up a very light weight. As low as it is. So I have 1 gram. I will look at 0 first. I mean, I won't put any weight on the block here. And I'll add some weight here and see. I won't put anything on it. I just put weight in the pan and see. How much is its friction? So I'll start first. I have 2 grams. So I put 2 grams here and see. Does it have a moment? So for now, there is no moment in it. After that, I will keep 2 grams more. I have this. I have 5 grams. So you can see that the friction has already begun here. So the total amount coming in here. 5 plus 1 is 6 grams. How much is it going to cost to come here? 6 grams So when I kept 0 here, what was the reading? 6 grams So I will write when I was keeping 0. So what was happening at 6 grams? Friction was occurring here. Now let's do the next one. What am I going to do next, friends? I put 1 gram here first. And see how much it moves. So I put 1 gram here. I put 1 gram here. And I will see how much its friction begins. So I'll do one thing first. First, I put 2 grams here. Nothing happened. Now I will put it here. I'll add 2 grams more. No, I put 2 and 5. So 5, 6, 7 happened. Nothing happened. Now I'm putting one more here. 8, 9. And I will do one thing. I'll put 10 directly and see what happens here. Okay. If I put 10 directly here. Okay. So we have friction at 10 grams. So how much is 1 gram, and what is its reading here? 10 grams Okay. So I will write here. It is getting 1 gram. And how much is it getting? 10 grams Now we will do the next one. Now what shall I do, friends? I'll put 2 grams here. How much am I supposed to put here? 2 grams I have 2 grams here. I'll put 2 grams here. And I'll see how much I'll get here. So for now, if you want to start from the bottom. So first I put 2 grams here again. So you will see that there is no friction here. You have to keep it from low to low. But I will put 10 grams directly here. Okay. So nothing happened here again. After that, I added 5 grams more here. Okay. What is 5? I added 5 grams more here. And I see. I take out 2 grams. And I put 5 grams here. This will be a total of 15 grams. Okay. This is also not happening. 16, 17. Okay. So here. 2 grams for this. And how much is it costing for this? 15, 16, 17. Here, 2 grams cost this amount. And how much is it costing here? 17 grams. Okay. Now. Now I will put it here. 3 grams How many grams should I put here? I'll put 3 grams here. And I will see how much it is happening. This is my 2 grams. And here are my friends with me. 1 gram Okay. So I put 3 grams here. And I see how much it has already begun. Okay. So I put 5 grams here first. Now I will put 10 grams. And I will put a total of 20 grams here. And I check if there is a motion here. So this has happened here. So okay. So how much is coming here? How much is it for 3 grams? 20 grams are coming. Okay. Now I do one thing. Now I will place 4 grams above. Okay. How much will I put on top? I'll put in 4 grams. And below. I put it below first. 1 gram 2 grams So this is 3. After 3. I put 20 here. Okay. Now I'm seeing friction here. So here I have 4 grams. And how much is coming here? 25 grams Okay. Enough. So, friends. Here is the mass on the block. Means W1 is written. So you must have seen that at the beginning. I took 0 mass. That means I didn't put any weight on the block. So there I was, getting 6 grams. Okay. So I took 0 here. And how much did I have to put into the pan here? 6 grams for movement. Okay. Once again, I took 1 gram. Okay. Here I took 1 gram. So here I had to add 10 grams for movement. Here I took 2 grams. So here I had to add 17 to the pan. Here I took 3. So here I had to add 20. And here I took 4 grams. So how much did I have to add here? I had to add 25. Now how will you calculate the total load? W0 plus W1 Where will you obtain W0 from? So the first mass you measured. Of the block. 63.34 Okay. Can you see 63.34 here? You must be seeing this. 63 And the weight of the pan is here. 23 This pan. First we would have seen the block. 63 So what do you have to do? W0 is yours. 63 Okay. 63.34 Now you have to add 0 to it. So W is yours. So if you add 0 to it. You will get 63.34. How much do you need to add later? Because W0 plus W1. So you will add 1. So if you add 1. You will get 64.34. If you add 2. You will get 65.35. If you add 3. You will get 66.34. And if you add 4. You will get 67.34. Okay. Now what do you have to do? You must calculate the total effort. How will you obtain it? P is equal to P0 plus P1. So how much is P0? P0 is yours. This came here. The mass of your P0 pan. You will be seeing this. 23 Okay. So how much do you need to add in 23? P1. 6 grams You must add 6 grams first. So you will get 29. If you add 10 grams. How much will you get in 23? 33 You will add 70 like this. P0. You have to add 20 to this. So if you add 20. You will get 43. Now if you add 25 to 23. You will get 48. Okay. Now what do you have to do? Coefficient of static friction divided by P by W. So this is P and this is W. So you have to divide 29 by 63.34. 33 by this. 34 by this. 30 by this. 43 by this. That means you have to divide this one. So if you divide the first one. You will receive 0.4578. You will get 0.5129. You will receive 0.6121. You will get 0.6481. You will get 0.7128. Now you have to add the values 1, 2, 3, 4, and 5. And divide by 5. So if you do this. You will get 0.5887. Okay. You will receive this value. Means if you do this. You will get 0.5887. Now you have to plot a graph. So let me show you how to plot a graph. Okay. So what do you have to do? You have to take a scale. If you have to plot against the x-axis and y-axis. Then okay. I will take one x-axis here. And what do I take here? Y-axis Okay. Now what do you have to do? Whom do you have to load against? Means. You must exert effort against the load W. Okay. So what you can see here. Now what is my load here. This is it. And what is my effort, P? How much is this? So the first one I have to take. I take a column of 5 5. Here on the x-axis. 5. 10 15. 20. 25 30. 35. 40 45 50 55 60 65 70 Okay. And I take it here. Here too I take 5 5. 5. 10 15. 20. 25 30. 35. 40 45 50 Okay. Now what do you have to see? That your load on the x-axis. Okay. How much is that? 63 At 63, how much do you need to put into effort P? 29. So this is mine. 60 1. 2. 3. 61 4. 5. 6. 7. 8. 9. 11. 12 18. 19. 26. 38 39. 40 41. 42 43 44 65 66 6. 3. 9. 10 11 You are looking at this point, this was 48, and how much is our point below? 29 And by the way, for Y2, you're seeing this point here, which is 66. And the value below was 63, right? Alright, now I'll disconnect it. So you'll get 4.75, right? So, let me tell you here how and what you need to write The coefficient is now 4.73, obtained from the graph of static friction between surfaces, correct? If you liked this video, please subscribe to my channel. So I'm deviating here to make sure you get 4.75, okay? So, let me tell you here how and what you need to write Please subscribe to my channel. So that I can get motivated So many videos made for you I will feel really good if you support me. I will upload all the practicals for classes 11-12 on this channel. Physics and Chemistry 12 I also need to upload them in Maxim. Then go and check out, please