Why are there no moment restrictions shown in the diagram for this case?

[werson tan]

Homework Statement

the whole structure wouldn't turn about x , y, and z direction , am i right ? why there are no moment restriction in this case(bottom) just in the above case , namely M_AZ and M_AX

Homework Equations

The Attempt at a Solution

 

[SteamKing]

Homework Statement

the whole structure wouldn't turn about x , y, and z direction , am i right ? why there are no moment restriction in this case(bottom) just in the above case , namely M_AZ and M_AX

Homework Equations

The Attempt at a Solution

The placement of the hinge at C and the bearing at A pretty much eliminate the possibility of any rotational motion. All that's left is to balance the applied load and the reaction forces.

 

[werson tan]

The placement of the hinge at C and the bearing at A pretty much eliminate the possibility of any rotational motion. All that's left is to balance the applied load and the reaction forces.

ya , why no sign of restriction of moment are indicated on the diagram ?