Two bicycle tires are set rolling with the same initial speed of 3.3 m/sm/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psipsi and goes a distance of 19.0 mm ; the other is at 105 psipsi and goes a distance of 93.8 mm . Assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be g� = 9.8 m/s2m/s2 . What is the coefficient of rolling friction μr�r for the tire under low pressure?

Q: Problem 2.268 A top-slewing crane is lifting an object C at a constant rate of ż = 5.3 ft/s while…

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Q: press tool machine uses a flywheel in the form of a solid steel disc 0.7 m diameter and 0.1 m thick…

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Q: As an oil well is drilled, each new section of drill pipe supports its own weight and that of the…

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Q: Sam, whose mass is 68 kg , straps on his skis and starts down a 68 m -high, 20∘ frictionless slope.…

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Q: Two blocks, A and B, are attached to one another by a rope that passes over a frictionless pulley as…

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Q: Suppose an automobile engine can produce 195 N⋅m of torque, and assume this car is suspended so that…

A: Given:

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Q: A truck weighing 200kN descends a 250m hill with brakes engaged at a constant speed. These brakes…

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Q: (1₁) A 25° W₁ = 4 16 W₁ = 6 16 W₁₂ = 8 lb We MK = 0.15 B no friction с 55° For the configuration of…

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Q: (d) A 21000 N weight is being pushed up on an inclined surface by a cylinder, as shown in Figure 1.…

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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.