36.A truss hinged at one end, supported on rollers at the other, is subjected to the horizontals load only. It's reaction at the hinged end will be A) horizontal B) vertical C) resultant of horizontal and vertical

To determine the reaction at the hinged end of a truss subjected to horizontal loads only, we can analyze the conditions of equilibrium. 1. **Known Conditions:** - The truss is hinged at one end and supported on rollers at the other. - It is subjected to horizontal loads only. 2. **Analysis:** - A hinge support can provide both horizontal and vertical reactions. - A roller support can only provide a vertical reaction. - Since the truss is subjected to horizontal loads only, the vertical forces must balance out to maintain equilibrium. 3. **Conclusion:** - The reaction at the hinged end must counteract the horizontal load. - Since there are no vertical loads acting on the truss, the vertical reaction at the hinge will be zero. Thus, the reaction at the hinged end will be purely horizontal. **Final Answer: A) horizontal**