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problem1) A steady state gas heater is used to heat CO2. The gas enters at 300 kPa, 15°C, and exits at 275 kPa, 1200°C. Assume there is no change in the kinetic or potential energy. Find the heat transfer per unit mass through the heater. Find property values, and compare this to the solution you would find using a constant specific heat.

problem2) A partial cross section of an amusement park ride is shown. While the ride spins up to the angular speed omega_c, there is a small platform F on which person P stands. Once the ride reaches the desired angular speed, the platform falls away and only friction keeps the person from sliding to the floor of the ride. The wall, against which the person lies, is inclined at the angle theta=15 degrees w.r.t. the vertical.

Model the person as a particle that is a distance d=20 ft from the spin axis AB and let the coefficient of static friction between the person and the wall be Mu_s= 0.7.

500_Cross section.jpg

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M93943

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