A wind turbine is rotating counterclockwise at 0.83 rev/s and slows to a stop in 13 s. Its blades are 23 m in length.
A wind turbine is rotating counterclockwise at 0.83 rev/s and slows to a stop in 13 s. Its blades are 23 m in length.
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Transcribed Image Text:A wind turbine is rotating counterclockwise at 0.83 rev/s and slows to a stop in 13 s. Its blades are 23 m in length.
(a) What is the angular acceleration of the turbine (in rad/s-)? (Indicate the direction with the sign of your answer.)
-.402
rad/s
(b) What is the centripetal acceleration (in m/s2) of the tip of the blades at t = 0? (Enter the magnitude. Round your answer to at least two decimal places.)
627.13
X m/s2
(c) What is the magnitude (in m/s2) of the total linear acceleration of the tip of the blades at t = 0? (Round your answer to at least two decimal places.)
%3D
m/s2
What is the angle that this total linear acceleration vector makes with the centripetal acceleration vector? (Enter the magnitude of the smallest such angle in degrees.)
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