Fundamentals of Aerodynamics
Fundamentals of Aerodynamics
6th Edition
ISBN: 9781259129919
Author: John D. Anderson Jr.
Publisher: McGraw-Hill Education
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Chapter 1, Problem 1.20P

Consider the existence of a forward-facing axial aerodynamic force on an airfoil, as discussed in Section 1.16. Can a forward-facing axial force exist on a flat plate at an angle of attack in a flow? Thoroughly explain your answer.

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Using first-order differential equations, demonstrate how different models of engineering systems can be used to solve the engineering problems. In your answer include one problem related to Electrical Engineering AND one problem related to Mechanical or Thermal Engineering.
A freight elevator, including its load, has a mass of 1 Mg. It is prevented from rotating due to the track and wheels mounted along its sides. The motor M develops a constant tension T= 4.1 kN in its attached cable. Neglect the mass of the pulleys and cables. Write out the equations of motion for the elevator, and solve for the acceleration. Then apply the constant acceleration equations to solve for the velocity when the elevator has moved 4 m upward from rest.
A freight elevator, including its load, has a mass of 1 Mg. It is prevented from rotating due to the track and wheels mounted along its sides. The motor M develops a constant tension T= 4.1 kN in its attached cable. Neglect the mass of the pulleys and cables. Write out the equations of motion for the elevator, and solve for the acceleration. Then apply the constant acceleration equations to solve for the velocity when the elevator has moved 4 m upward from rest.
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