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Why do we not take into account the normal forces or the frictional forces acting on the jumper when determining the vertical components of the impulse? The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete. Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s, remains in contact with the ground for 0.18 s, and takes off at a 50° angle with a velocity of 12 m/s, determine the vertical component of the average impulsive force exerted by the ground on his foot. Give your answer in terms of the weight W of the athlete.
Determining the Exit Temperature and Power Input of Air through a Compressor, Air at 150Pa and 310K enters a compressor of inlet diameter 2cm. The Compressor raises the pressure to 3.5 times the inlet pressure
a vertical bar ed has a circular cross-section and is fixed at e. member abc is a single member that lies on the
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Determine the analytical solution for the maximum stress of the beam shown; compare with stress results from SolidWorks.
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a shaft is subjected to bending and torsion such that the bending stress on the surface is 80 mpa and the shear stress
1 kg of propane is contained in a piston - cylinder assembly at a constant pressure of .20 mpa heat transfer slowly to
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