(Solved): A 706-kg horse A lifts a 56-kg hay bale B as shown. At the instant when r=8m and =60, the ve ...

A 706-kg horse $A$ lifts a 56-kg hay bale $B$ as shown. At the instant when $r=8\mathrm{m}$ and $\theta =60^{\circ }$, the velocity and acceleration of the horse are $2\mathrm{m}/\mathrm{s}$ to the right and $0.5\mathrm{m}/{\mathrm{s}}^2$ to the left, respectively. Neglect the mass of the pulley. Determine at that instant the tension in the cable.