Direction: Consider a propped cantilever beam ABC under two loads of magnitude P each as shown in the figure below. Flexural rigidity of the beam is EI.
-
The reaction at C is
-
-
9Pa (upwards) 16L -
9Pa (downwards) 16L -
9Pa (upwards) 8L -
9Pa (downwards) 8L
-
Correct Option: C
Remove support C.
deflection (at C)
| = | + | × L | ||
| 2EI | EI |
| = | EI |
Deflection at C due to
| RC = | 3EI |
| = | 3EI |
Equating, (by compatibility equation)
| = | ||||
| EI | 3EI |
| ⇒ RC = | ↑ | 8L |
