A 680 N person stands at the end of a 1.51 m cantilever beam. The beam has a base of 85 mm and a height of 150 mm. Determine the maximum bending stress in the beam.

A simply supported beam with dimensions of b = 16 in., h = 28 in., d = 25.5 in., and L = 23 ft supports a uniform service (unfactored) dead load of 2.266667 kips/ft including its own self weight plus a uniform service (unfactored) live load of 1.4 kips/ft. The beam is reinforced with five No. 6 Grade 60 bars. The concrete strength is 10,000 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Using the effective moment of inertia, determine the immediate mid-span deflection of the beam due to the combined service loads (dead plus live).The effective moment of inertia Ie = 9,103.4 in.4.

Force P = 45 N is applied to a lever at the end of a 30-mm-diameter shaft. Force Q = 905 N is applied directly to the shaft. Determine the normal stress σy at point K. Let a = 130 mm and b = 235 mm.

A 755 N person stands in the middle of a 2.61 m simply-supported beam. The beam has a base of 95 mm and a height of 155 mm. Determine the maximum horizontal shear stress in the beam.

Force P = 44 N is applied to a lever at the end of a 32-mm-diameter shaft. Force Q = 140 N is applied directly to the shaft. Determine the normal stress σy at point H. Let a = 130 mm and b = 240 mm.

Force P = 49 N is applied to a lever at the end of a 33-mm-diameter shaft. Force Q = 115 N is applied directly to the shaft. Determine the normal stress σy at point H. Let a = 140 mm and b = 200 mm.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 10 No. 6 bars at a depth of 14 in. The top row contains 6 No. 6 bars at a depth of 10.5 in. Determine the effective (centroidal) depth, d, of the steel.

A rectangular beam has a cross section of b = 14 in., h = 28 in., and d = 25.5 in. It is reinforced with two No. 7 Grade 60 bars. The concrete strength is 8,200 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the assumed modulus of elasticity of the concrete, Ec.

Explain the difference in pediatric and adult anatomy and function. 

The spherical face shield of an astronaut’s helmet is made from polycarbonate with a yield strength of 110 MPa. The shield has an outside diameter of 352 mm and a thickness of 5.1 mm. If the shield is successfully pressure tested to 805 kPa on Earth, determine the factor of safety with respect to yielding.