I am Sambu S. Gajankar. Today is the concept of what the antifreecation bearing here we are finding the life of the bearing. This is the bearing work for 10 hours per day for a life of 3 years at 9.00. We have to find out the life of the bearing. Therefore it can be written as L is equal to N hours per day into 365 days divided by year into 3 years into 16 minutes into 900 RPM. 900 RPM per minute divided by 10 to 26. 10 to 26 is nothing but we are making in terms of millions. Therefore can be written as N 10 is equal to 10 days this is the answer into 365 into 3 60 into 900 divided by 10 to 26. The answer will be 5, 9, 1, 3 millions of revolution. If the same problem in terms of week they have given it. I will take an example here, in terms of week then what we have to do. It can be written as L is equal to 40 hours per week into 52 week per year into 21.2, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, or 60 minutes into 60 to 100 can be written by the 10 just by the same thing.амен this week we have running our cancels and can be written as what 40 into 52 into 2.5 into 60 into 200 divided by 10 to 6 dances will be 374.4 million revolution. That means in problem if they are given in terms of days you have to go for 365 days in terms of week you have to go for 52 weeks. Next if they are given in this birth, it very much goes for 10 hours per day, 5 days per week for 5 years I did 300 rp, so 3000 rp then 10 hours per day into 5 days per week. He is nothing but days and days cancels and it becomes what? 10 into 5 that is our per week it becomes similar to the week problem. The solution for this one is L is equal to 10 into 5. It is a week 52 into number of years 5 close the bracket 60, what is in 3000, we will take this one as 3000 in, we will make it as N here N over this is an rp, N N divided by 10 to 6, non-sub for this one is the thing but it is not with 3000 it is 300 okay, so it is 300. The answer will be 234 millions revolution. The life is 900 hours at 200 rp, it can be done as what? L 900, we have to make in terms of millions for revolution and it into 60 into N well is 200 divided by 10 to 6. It becomes 108 millions revolution. There were the 4 concepts that went into in the next videos based upon the days what we have to how to find out the life of the bearing, this is the, this one is the best one. This is the procedure for solving the life of the bearing when the days are given and the weeks are given we have to find out by using by following this procedure. In terms of days and days get cancelled here then we will get the life of the bearing in this way. Next in terms of hours they have given it, this is the procedure we have to find out for following for finding the life of the bearing. I also those who are in the thank you very much.