Question

Rotation contribution at the fixed end of a member is

• A. \(0.75\)
• B. \(0.5\)
• C. \(1.0\)
• D. Zero

Hint:

At a fixed support, \[ \boxed{ \text{Deflection}=0, \qquad \text{Rotation}=0. } \]

Answer 1

The Correct Option is D

Step 1: Recall what a fixed support physically does.
A fixed support clamps the member completely, so it cannot move sideways, cannot move vertically, and crucially, it cannot rotate either.
Step 2: Connect this to the rotation at that end.
Since rotation is fully restrained, the slope of the member at the fixed end never changes under load.
Step 3: State the value.
\[ \theta_{fixed} = 0. \]
\[ \boxed{\text{Zero}} \]