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BÀI TẬP TUẦN 03 3.1 Sinh viên làm tập F5-1 đến F5-6 sách Engineering Mechanics-Statics Thirteenth Edition (đáp số phần cuối sách) (Những sinh viên tự làm để hiểu nâng cao kỹ làm bài, không cần nộp) Từ 3.2 trở sinh viên làm vào giấy để nộp 3.2 Determine the horizontal and vertical components of reaction at the pin A and the reaction of the rocker B on the beam 3.3 The overhanging beam is supported by a pin at A and the two-force strut BC Determine the horizontal and vertical components of reaction at A and the reaction at B on the beam 3.4 Determine the components of the support reactions at the fixed support A on the cantilevered beam 3.5 If the wheelbarrow and its contents have a mass of 60 kg and center of mass at G , determine the magnitude of the resultant force which the man must exert on each of the two handles in order to hold the wheelbarrow in equilibrium 3.6 The ramp of a ship has a weight of 90 kg and a center of gravity at G Determine the cable force in CD needed to just start lifting the ramp Also, determine the horizontal and vertical components of force at the hinge (pin) at A 3.7 Calculate the magnitude of the force supported by the pin at A under the action of the 1.5-kN load applied to the bracket Neglect friction in the slot 3.8 A 35-N axial force at B is required to open the spring-loaded plunger of the water nozzle Determine the required force F applied to the handle at A and the magnitude of the pin reaction at O Note that the plunger passes through a vertically-elongated hole in the handle at B, so that negligible vertical force is transmitted there 3.9 The tie rod is used to support this overhang at the entrance of a building If it is pin connected to the building wall at A and to the center of the overhang B , determine if the force in the rod will increase, decrease, or remain the same if (a) the support at A is moved to a lower position D , and (b) the support at B is moved to the outer position C Explain your answer with an equilibrium analysis, using dimensions and loads Assume the overhang is pin supported from the building wall .. .3. 7 Calculate the magnitude of the force supported by the pin at A under the action of the 1.5-kN load applied to the bracket Neglect friction in the slot 3. 8 A 35 -N axial force... vertically-elongated hole in the handle at B, so that negligible vertical force is transmitted there 3. 9 The tie rod is used to support this overhang at the entrance of a building If it is pin connected