In$-$Class Work$\backslash$#$12$

Problem $1$

Given: The frame supports an external load and moment as shown.

Find: The horizontal and vertical components of the pin reactions at C and the magnitude of reaction at B $.$

Plan:

a$)$ Draw a FBD of frame member BC$.$ Why pick this part of the frame?

b$)$ Apply the equations of equilibrium and solve for the unknowns at C and $\backslash ($ B $\backslash ).$ In$-$Class Work $\backslash$#$12$

Problem $2$

Given: Small bucket crane used to lift a man and materials at $\backslash (\backslash$varepsilon $\backslash )$ construction site.

Find: Determine the force in the hydraulic cylinder.

Plan: $1)$ Draw FBDs of boom$/$bucket GFECAD $\backslash$& pin at B

$2)$ Apply E$-$of$-$E to solve for $\backslash ($ F$\_\{$E B$\}\backslash ).$ In$-$Class Work $\backslash$#$12$

Problem $2$

Given: Small bucket crane used to lift a man and materials at a construction site.

Find: Determine the force in the hydraulic cylinder.

Plan: $1)$ Draw FBDs of boom$/$bucket GFECAD $\backslash$& pin at B

$2)$ Apply E$-$of$-$E to solve for $\backslash ($ F$\_\{$E B$\}\backslash ).$