The model of a propeller, 3 m diameter, cruising at 10 m/s in air, is – McqOptions

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1.	The model of a propeller, 3 m diameter, cruising at 10 m/s in air, is tested in a wind tunnel on a 1 : 10 scale model. If thrust of 50 N is measured on the model at 5 m/s wind speed, then thrust on prototype will be
A.	20000 N
B.	2000 N
C.	5000 N
D.	500 N
Answer» B. 2000 N

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