1. A metal wire 25 ft long, hanging vertically, supports a load of 750 lbs. Neglecting the weight of the wire, determine the required diameter if the stress is not to exceed 15 ksi and the total elongation is not to exceed 0.35 in. Assume E = 29 x 105 psi. 2. A steel tire, 12 mm thick, 80 mm wide, and 1.5 m inside diameter, is heated and shrunk onto a steel wheel 1500.5 mm in diameter. If the coefficient of static friction is 0.35, what torque is required to twist the tire relative to the wheel? Neglect the deformation of the wheel. Use E = 200 GPa.
1. A metal wire 25 ft long, hanging vertically, supports a load of 750 lbs. Neglecting the weight of the wire, determine the required diameter if the stress is not to exceed 15 ksi and the total elongation is not to exceed 0.35 in. Assume E = 29 x 105 psi. 2. A steel tire, 12 mm thick, 80 mm wide, and 1.5 m inside diameter, is heated and shrunk onto a steel wheel 1500.5 mm in diameter. If the coefficient of static friction is 0.35, what torque is required to twist the tire relative to the wheel? Neglect the deformation of the wheel. Use E = 200 GPa.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Civil Engineering Physics
Transcribed Image Text:1. A metal wire 25 ft long, hanging vertically, supports a load of 750 lbs. Neglecting the weight of the wire,
determine the required diameter if the stress is not to exceed 15 ksi and the total elongation is not to
exceed 0.35 in. Assume E = 29 x 105 psi.
2. A steel tire, 12 mm thick, 80 mm wide, and 1.5 m inside diameter, is heated and shrunk onto a steel
wheel 1500.5 mm in diameter. If the coefficient of static friction is 0.35, what torque is required to twist
the tire relative to the wheel? Neglect the deformation of the wheel. Use E = 200 GPa.
Transcribed Image Text:3. A steel rod having a cross-sectional area of 450 mm and a length of 185 m is suspended vertically from
one end. It supports a tensile load of 20 kN at the lower end. If the unit mass of steel is 7850 kg/m³ and E
= 200 x 10° MN/m?, find the total elongation of the rod.
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