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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