3. (a) State and explain work-kinetic energy theorem. Discuss the meaning of work done as positive, negative and zero in terms of energy transfer. (b) An elevator cab of mass 700 kg is found to go from the ground floor to the 10 floor of the south academie building at NSU, traversing a distance of 20 m. The elevator started to move with an acceleration. which was one-fifth of the acceleration due to gravity. (I) Draw free body diagram on the elevator and calculate the net work done on the elevator. (II) If the elevator moved with an initial velocity 3 m's, find its final velocity just before reaching the 10th floor.
3. (a) State and explain work-kinetic energy theorem. Discuss the meaning of work done as positive, negative and zero in terms of energy transfer. (b) An elevator cab of mass 700 kg is found to go from the ground floor to the 10 floor of the south academie building at NSU, traversing a distance of 20 m. The elevator started to move with an acceleration. which was one-fifth of the acceleration due to gravity. (I) Draw free body diagram on the elevator and calculate the net work done on the elevator. (II) If the elevator moved with an initial velocity 3 m's, find its final velocity just before reaching the 10th floor.
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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Transcribed Image Text:3. (a) State and explain work-kinetic energy thcorem. Discuss the meaning of work done as
positive, negative and zero in terms of energy transfer.
(b) An elevator cab of mass 700 kg is found to go from the ground floor to the 10 floor of
the south academic building at NSU, traversing a distance of 20 m. The elevator started to
move with an acceleration, which was one-fifth of the acceleration due to gravity.
(1) Draw free body diagram on the elevator and calculate the net work done on the
elevator.
(II) If the elevator moved with an initial velocity 3 m's, find its final velocity just before
reaching the 10th floor.
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