Q2/ Determine the forces at the pin joint (F) and the roller support (G) ? 30KN 20 KN 2m BY 2m D 2m E O G = 130 KN, Fx = 130 KN, and Fy = 50 KN %3D O G = 50 KN, Fx = 70 KN, and Fy = 100 KN O G = 0 KN, Fx = 0 KN, and Fy = 50 KN %3D O All of the above 2m
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- Rod AB leans against the wall with a coefficient of static friction, μSB = 0.2. The contact surface at A is smooth (μSA = 0). Find the minimum force P necessary to prevent rod AB from sliding, given:WRod = 40 lbs, L1 = 7 ft, θ = 42 °.Two plates of which (2.5 d) and d as outer and inner diameter respectively and thickness 25 mm each are held together by means of a bolt. The bolt material S-400 N/mm² and E210000 N/mm² while plate material E= 72000 N/mm². The initial preload in the bold is 6.0 KN and force on the joint is 12 kN. Find out size of bolt assuming factor of safety 2.0.Engineering Mechanics (Like/Thumbs-up will be given. Write the solutions&FBD legibly. Include negative sign if in Compression, ex. -1,500 or if in Tension, ex. 1,500. Round to the nearest whole number.) I. (Multiple Choice) From the given A-Frame shown above, which statements are true: a. The horizontal reaction at C is equal to 0 b. The vertical reaction at A is upward c. The horizontal reaction at pins B and D are equal in magnitude d. Member BD is a two-force member e. None of the above II. (Compute for the external reactions for all members of the frame shown): > Vertical Reaction at A > Horizontal Reaction at A > Vertical Reaction at E > Vertical Reaction at D > Vertical Reaction at B > Vertical Reaction at C > Horizontal Reaction at C > Horizontal Reaction at B > Horizontal Reaction at D
- A 27-mm-diameter steel [E = 190 GPa; α = 12.5×10−6/°C] bolt is used to connect two rigid parts of an assembly. The bolt length is a = 125 mm. Determine the minimum clamping force that must be provided by the bolt when T1 = 17°C so that the clamping force it exerts when T2 = 58°C is at least 1.6 kN.P1=215 N P2=325 N P3=150 N L1=3m L2=4m 1. Draw a "free body diagram". The diagram should be for members BE, BF, CF, and DF to help solve. 2. What is the force on members CF, BF, BE? Is each of these members having tension or compression?(a) Assess the stability of the wedge formed from intersection of the two joint planes with the face of a wall slope dipping 56° at dip direction 329°, or briefly shown as (56°/329°). The dip and dip direction for the two joint sets are as follows. Joint Set 1: (41°/51°), Joint Set 2: (40°/326°). Joint planes are assumed to have no cohesive resistance (C = 0) and their friction angle (‹= phi) is assumed to be the same for both joint sets and equal to 26°.
- load of 12 kN is raised by means of a screw jack. The mean diameter of the square threaded screw is 48 mm and the pitch is 12 mm. A force of 180 N is applied at the end of a lever to raise the load. Determine the length of the lever to be used and the mechanical advantage obtained. the screw self-locking? Take µ = 0.12.....An electric motor drives a compressor by use of V-belt. The angle of contact on the smaller pulley is 2.89 rad and the belt speed runs at 29.36 m/s. The groove angle of the pulleys is 35°. Determine the tension in the slack side of the belt in N if the belt has a cross-sectional area of 366 mm2, density 1000 kg/m3, and an allowable tensile stress of 2.3 MPa. The coefficient of friction between the belt and the pulley is 0.3given: - initial length of steel tube= 200mm - aluminum rod is 0.175 mm shorter than steel tube. - l=0.175 mm properties of materials - ALUMINUM: coefficient of linear expansion: 23x10-6 /C modulus of elasticitty= 70 GPa - STEEL Coeficient of linear expansion: 11x10-6 /C Modulus of elasticity: 200 GPa *NEGLECT SHEAR AND LATERAL DEFORMATIONS. REQUIRED: - which of the two members will have contact on the rigid switch first and at what temperature - axial stress that would develop on 1st member after the 2nd material fills in the gap safely. PLS. SHOW FULL SOLUTIONS WITH BRIEF EXPLANATIONS AND NECESSARY DIAGRAMS...
- An aluminum [E = 10,000 ksi] control rod with a circular cross section must not stretch more than 0.22 in. when the tension in the rod is 2100 lb. If the diameter of the rod is 0.372 in., determine the maximum length of the rod.9-8kN stress/force on the AB rope holding the base station shown below There are. In order for the net force at point A of this base station to be downward What is the stress/force that should be on the AC rope? A) 5556 N C) 7356 N B) 8200 N D) 3648 N E) 1228 N(1) E 4 kips C Lon -9 ft-9 ft——9 ft——94—- 1 kips What are the member forces in BD, BE and CE? Indicate if they are in tension (T) or compression (C).