Answer:
The mean effective load (in KN) =8.21 KN
Step-by-step explanation:
Given that
Dynamics load rating C= 36.8 KN
![life\ of\ bearing\ L_(MR)=90* 10^6](https://img.qammunity.org/2020/formulas/engineering/college/4xaw2zdvodeuyoxju9nax56ef8r1rfthe3.png)
We know that life of bearing in million revolutions is given as follows
![L_(MR)=\left((C)/(P_e)\right)^p](https://img.qammunity.org/2020/formulas/engineering/college/c3p7opr5dvqz1jta9a7g52jo1vn2drmq3z.png)
Given that bearing is ball bearing so here we will put p=3
![L_(MR)=\left((C)/(P_e)\right)^3](https://img.qammunity.org/2020/formulas/engineering/college/bybuh3z9c9g1qntsxuxqzpfvamtly7p6au.png)
Now by putting the values
![90=\left((36.8)/(P_e)\right)^3](https://img.qammunity.org/2020/formulas/engineering/college/mcslbf034ftrj6zs0blqs68m6x7kvdey59.png)
![P_e=8.21 KN](https://img.qammunity.org/2020/formulas/engineering/college/skarr6etvz51kj2j8hslxlx0lzrop3ljo7.png)
So the mean effective load (in KN) =8.21 KN