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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.
Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
a uniform rectangular cabinet having dimensions shown and mass m=50kg is placed onto a cart of mass 10 kg as shown. no slipping between cabinet and cart. determine the maximum allowable force P so that the cabinet does not tip.
air enters a compressor operating at steady state with a pressure of 1 bar a temperature of 20degc and a volumetric
let it cool back to the outdoor temperature, pass it through a turbine, and discharge the cold air leaving the turbine into the house. from a thermodynamic point of view, is the proposed system sound?
Briefly describe the meaning of the term mechatronics both in terms of the 'systems approach' and the technology involved.
What gas pressure will the experimenter measure inside the bulb, A glass bulb contains air at room temperature and at a pressure of 1 atmosphere. It is placed in a chamber filled with helium gas at 1 atmosphere and at room temperature
a gas in a cylinder fitted with a piston undergoes a cycle composed of three processes. first the gas expands at
The compression strength of Kevlar 49 fiber is about one-eight of its tensile stress. Estimate the smallest diameter of a rod on which 12 um diameter Kevlar fiber can be wound without causing kinks on its compression side.
if the u.s. fleet of vehicles suddenly became 15 more fuel efficient how much annual emissions of co2 would that
conditionsw10000 lbs 100 ft2clmax 1.5aircraft certified aerobatic category -3 6 g1. find stall speed keas at 1 g 0
consider a cylindrical nickel wire 1.9 mm in diameter and 3.2 times 104 mm long. calculate its elongation when a load
Plot the spectral blackbody emissive power of the sun versus wavelength in the range of 0.01 micro m to 1000 micro m?
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