Hello mj.alawami Originally Posted by
mj.alawami How to solve this problem ?
Please answer in steps
Thank you
The beam is $\displaystyle 8$ m in length; it is uniform. So its weight acts $\displaystyle 4$ m from each end.
If the reaction forces at A and B are $\displaystyle R_A$ and $\displaystyle R_B$ kg-wt respectively, take moments about A:
$\displaystyle 450 \times 4 + 220\times 5.6 -8R_B=0$
Solve this equation for $\displaystyle R_B$.
Then resolve vertically (or take moments about B) to find $\displaystyle R_A$.
Can you complete it now?
Grandad