The fixed supported beam $AB$ is strengthened using the

simply supported beam $CD$ and the roller at $F$ which is set

in place just before application of the load $P.$ Determine

the reactions at the supports if $EI$ is constant. $($Figure $1)$

Determine the forces of reaction at A and $B.$

Express your answers in terms of some or all of the variables $L,E,$I, and $P,$ separated by a comma. Enter positive value if the force is directed downward and

negative value if the force is directed upward.

$A_y,B_y=$

Part B

Determine the moments of reaction at A and $B.$

Express your answers in terms of some or all of the variables $L,E,$I, and $P,$ separated by a comma. Enter positive value if the moment is directed

counterclockwise and negative value if the moment is directed clockwise.

$M_A,M_B=$

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Part C

Determine the forces of reaction at $C$ and $D.$

Express your answers in terms of some or all of the variables $L,E,$I, and $P,$ separated by a comma. Enter positive value if the force is directed downward and

negative value if the force is directed upward.