Answered: 29. Determine the total energy required…

29. Determine the total energy required to accelerate a 1800-kg car from 10 to 60 km/h on an uphill road with a vertical rise of 40 m. a. 935.3493kJ b. 949.3756kJ c. 1,055.3236kJ d. 1,052.2680kJ

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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To apply the principle of work and energy to a system of particles. The principle of work and energy can be extended from one particle to include a system of particles as follows: ∑T1+∑U1−2=∑T2 where ∑T1 is the system's initial kinetic energy, ∑U1−2 is the sum of the work done by all external and internal forces acting on the system's particles, and ∑T2 is the system's final kinetic energy. When the particles either are undergoing only translational motion or are connected by inextensible cables, the internal forces of the particles negate each other; only the external forces are required in the principle of work and energy. When frictional forces are present, the work done by the frictional force is UF=μkNs, where μk is the coefficient of kinetic friction, N is the normal force, and s is the body's displacement. In this equation, the work done by friction represents both the external work of friction and the internal work that is converted into various forms of internal energy, such…
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