Tutorial $3$: Equilibrium In $2$D and $3$D $(3$D Equilibrium$)$

For a car of mass $1600$ kg $,$ two different locations $C$ and $D$ are considered for a single jack. In each case, the entire right side of the car is lifted just off the ground. Determine the normal reaction forces at A and $B,$ and the vertical jacking force required in each case.

Ans: at C: $N_A=2354\mathrm{.}4N,N_B=5493\mathrm{.}6N,$ at $D$:$N_A=3139\mathrm{.}2N,N_B=4708\mathrm{.}8N$