Afamily of trolls communicates with another family at
thebottom of a two-tired cliff as shown....
Afamily of trolls communicates with another family at
thebottom of a two-tired cliff as shown. the trolls tie messages
torocks and roll them off the top of the cliff at the minimum
speednecessary to just miss the 2nd cliff and land below.
a. determine the velocity chosen.
b. how far from the bottom of the cliff does the
rockland?
Answers: 3
Physics, 22.06.2019 07:50
The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.
Answers: 2
Physics, 22.06.2019 12:30
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