2 h Steel Wood PROBLEM 6.2-1

a 50mm x 200mm beam is supported has a 2kN load placed 1m from the left reaction. calculate the maximum bending stress when the beam is lying on edge and when lying flat (lying on edge = 33 x 10^-6 m^4 lying flat = 2.08 x 10^-6 m^4)

A thin-wall circular section beam has a diameter of 200 mm and is 1 m long. One end of the beam is fixed and a torque of 15 kN·m is applied to the beam at the other end. If the maximum allowable shear stress in the beam is 200 MPa and the maximum allowable angle of twist is 2°, calculate the minimum thickness of the beam walls. Use G = 25 GPa. No wrong answers pls , i will rate negative

A beam has a bending moment of 3.5 kN-m applied to a section with a hollow circular cross-section of external diameter 3 cm and internal diameter 2.3 cm . The modulus of elasticity for the material is 210 x 109 N/m2. Calculate the radius of curvature and maximum bending stress. Also, calculate the stress at the point at 0.6 cm from the neutral axis (i) The moment of inertia in (mm^4)=  ii) The radius of curvature in (mm) = (iii) The maximum bending stress  in (N/mm^2)= iv) The bending stress at the point 0.6 cm from the neutral axis  in (N/mm^2)=