Import Question JSON

\text{Initially, when both men are supporting the bar, each man supports half the weight, so each feels a force of } \frac{W}{2}. \text{When one man lets go, the bar starts to rotate about the other man's hand as a pivot point.} \text{At the instant one man lets go, we need to analyze the forces and torques about the pivot point (the remaining man's hand).} \text{The bar will have both translational and rotational motion. Using the principle of virtual work or analyzing the initial acceleration:} \text{The center of mass of the bar is at its middle, which is at a distance } \frac{L}{2} \text{ from the pivot point.} \text{At the instant of release, the bar begins to rotate. The force at the pivot must provide the centripetal acceleration for the center of mass.} \text{Using torque analysis about the pivot point and considering the initial conditions, the force on the remaining man's hand becomes } \frac{W}{4}. \text{Therefore, the correct answer is option 4: } \frac{W}{4}.