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The force F required to compress a spring a distance x is given by F - Fo = kx where k is the spring constant and Fo is the preload. Determine the work required to compress a spring, whose spring constant is k = 37 kN/m, a distance of 2 cm starting from its free length (i.e., Fo = 0 kN). Also, determine the power required, in Watts, to compress the spring in 0.5 seconds. Please draw a picture that illustrates the problem.
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A round cantilever bar is loaded. Given diameter d = 50mm, T = 0.1P N.m, F = 10P N. Allowable stresses are 100 MPa in tension and 60 MPa in shear on a section at a = 120 mm from the free end. Determine largest P.
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There are three copper blocks, A, B, and C, containing 10 kJ of energy at 600 C, 200 C, and 100C, respectively, and a fourth iron block, D, containing 10 kJ of mechanical energy. (Thus, all devices have the same amount of energy.) The surrounding tem..
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christian huygens 1629-1695 the greatest clockmaker in history suggested that an international unit of length could be
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