In part a, total mass equals mass (mass of bike + mass of So0-Hoo + mass of Eun Yeong-Ro) is to be considered as he needs to apply force such that he needs to move his mass, mass of bike and mass of Eun Yeong-Ro. In the question it is given that he travels a vertical distance of 6.39m. This will be the distance traveled. Using formula of work done= Force*Displacement we calculate the work done. From the Work-Energy theorem, work done is equal to the change in kinetic energy. Initially, he was moving with a velocity of 6m/s but later reduced to 1.43m/s. Here, initial velocity is taken as 6m/s and final velocity as 1.43m/s Power can be written as the rate of change of work done. P=Work/Time. From part a and part b we can calculate the total work done. The question is given to calculate the power for 30 minutes. Converting it to seconds by multiplying by 60.

In part a, total mass equals mass (mass of bike + mass of So0-Hoo + mass of Eun Yeong-Ro) is to be considered as he needs to apply force such that he needs to move his mass, mass of bike and mass of Eun Yeong-Ro. In the question it is given that he travels a vertical distance of 6.39m. This will be the distance traveled. Using formula of work done= Force*Displacement we calculate the work done. From the Work-Energy theorem, work done is equal to the change in kinetic energy. Initially, he was moving with a velocity of 6m/s but later reduced to 1.43m/s. Here, initial velocity is taken as 6m/s and final velocity as 1.43m/s Power can be written as the rate of change of work done. P=Work/Time. From part a and part b we can calculate the total work done. The question is given to calculate the power for 30 minutes. Converting it to seconds by multiplying by 60.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.19P: Plot the earths gravitational acceleration g(m/s2) against the height h (km) above the surface of...

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