(0.20) rad/s' 2.5 f 2. During a gust of wind, the blades of the windmill are given an angular acceleration of 0.20 rad/s, where e is in radians. If initially the blades have an angular velocity of 5 rad/s, (a) determine the speed and acceleration of point P located at the tip of one of the blades just after the blade has turned two revolutions. (b) How long will it take for the angular velocity to reach 7 rad/s? (c) If the wind is gone when the windmill reaches the angular velocity of 7 rad/s and decelerates at 0.1 rad/s until it stops, how many turns did the windmill make in total from that gust of wind?
(0.20) rad/s' 2.5 f 2. During a gust of wind, the blades of the windmill are given an angular acceleration of 0.20 rad/s, where e is in radians. If initially the blades have an angular velocity of 5 rad/s, (a) determine the speed and acceleration of point P located at the tip of one of the blades just after the blade has turned two revolutions. (b) How long will it take for the angular velocity to reach 7 rad/s? (c) If the wind is gone when the windmill reaches the angular velocity of 7 rad/s and decelerates at 0.1 rad/s until it stops, how many turns did the windmill make in total from that gust of wind?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(0.20) rad/s
2.5 t
2. During a gust of wind, the blades of the windmill are given an angular
acceleration of 0.20 rad/s, where 8 is in radians. If initially the blades
have an angular velocity of 5 rad/s, (a) determine the speed and
acceleration of point P located at the tip of one of the blades just after
the blade has turned two revolutions. (b) How long will it take for the
angular velocity to reach 7 rad/s? (c) If the wind is gone when the
windmill reaches the angular velocity of 7 rad/s and decelerates at 0.1
rad/s until it stops, how many turns did the windmill make in total from
that gust of wind?
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