(Solved): 2/12 The guy cables AB and AC are attached to the top of the transmission tower. The tension in cab ...

$2/12$ The guy cables $AB$ and $AC$ are attached to the top of the transmission tower. The tension in cable $AB$ is $8\mathrm{kN}$. Determine the required tension $T$ in cable $AC$ such that the net effect of the two cable tensions is a downward force at point $\mathbf{A}$. Determine the magnitude $R$ of this downward force. $2/16$ A force $\mathbf{F}$ of magnitude $800\mathrm{N}$ is applied to point $C$ of the bar $AB$ as shown. Determine both the $x-y$ and the $\mathbf{n}-\mathbf{t}$ components of $\mathbf{F}$. $2/26$ It is desined to remove the spike from the timber by applying force along its horizontal axis. An obstruction A prevents direct access, so that two forces, one $1.6\mathrm{kN}$ and the other $\mathbf{P}$, are applied by cables as shown. Compute the magnitude of $\mathbf{P}$ necessary to ensure a resultant $\mathbf{T}$ directed along the spike. Also find $T$. 2/40 A man exerts a force $F$ on the handle of the stationary wheelbarrow at $A$. The mass of the wheelbarrow along with its load of dirt is $85\mathrm{kg}$ with center of mass at $G$. For the configuration shown, what force $F$ must the man apply at $A$ to make the net moment about the tire contact point $B$ equal to zero?