CE $240$

EngINEERING statics

ExAM #$3$

TIME: IHR $3$OMIN

August $15,2013$

OPEN BOOK$/$Notes

Prob. #$1$: $(25\%)$

A $90kg$ Painter is climbing UP THE $15kg$ LADDER. FIND THE Distance $"$s$"$ Before the cadder

Sups. Also find the reaction $($e$)$ THe wall.

$W_P=$ WEIGHT OF PANTER $L_{AB}=4^m$

Prob.#$2$: $(25\%)$

Evaluate the Smallest force $F$ that will Disturb EQUILRRIUM.

Find answers for $1$ and $2$