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A helicopter of mass 1.40 × 10³ kg is descending vertically at 3.00 m/s. The pilot increases the upward thrust provided by the main rotor so that the vertical speed decreases to 0.450 m/s as the helicopter descends 3.00 m. What is the initial energy of the helicopter?

A helicopter of mass 1.40 × 10³ kg is descending vertically at 3.00 m/s. The pilot increases the upward thrust provided by the main rotor so that the vertical speed decreases to 0.450 m/s as the helicopter descends 3.00 m. What is the initial energy of the helicopter?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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How much work is done on helicopter by gravity?
How much work is done on it by the upward thrust force?
What is the magnitude of the upward thrust force (assumed constant)?
 
 
A helicopter of mass 1.40 x 10³ kg is descending vertically at 3.00 m/s. The pilot increases the upward thrust provided by the main rotor so that the vertical speed decreases to 0.450 m/s as the helicopter descends 3.00 m. What is the initial energy of the helicopter?
Transcribed Image Text:A helicopter of mass 1.40 x 10³ kg is descending vertically at 3.00 m/s. The pilot increases the upward thrust provided by the main rotor so that the vertical speed decreases to 0.450 m/s as the helicopter descends 3.00 m. What is the initial energy of the helicopter?
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