Class23_Ex5 - Ex) A jet strikes a vane which moves to the...

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Unformatted text preview: Ex) A jet strikes a vane which moves to the right at constant velocity on a frictionless cart. Compute (a) the force required to restrain the cart and (b) the power delivered to the cart. Also find the cart velocity for which (c) the force is a maximum and (d) the power is a maximum. Solution: ∑ V where, Assume relative inertial coordinates with non-deforming CV i.e. CV moves at constant translational non-accelerating ̂ ̂ ̂ with and steady flow Continuity: 0 V 0 Momentum: ∑ 0 ∑ ∑ 0 0 cos 1 cos 1 1 cos , cos 0 0 2 1 cos 2 1 cos 4 3 4 4 cos 0 0 16 6 3 1 3 12 4 2 6 3 4 27 2 3 1 1 cos cos ...
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