Internal centering and mounting system for pipes

[YHE]

Hi.

Can anybody help me out with som calculations of internal forces in an arm-system?
There's a easy explanation with this message.

 

[Travis_King]

Welcome to PF, generally it is asked that you show where you currently sit with your calculations/conceptualization and the folks here will show you either where you went wrong, or where you need to go.

What are you having trouble with in this problem?