There is a Cathedral-of-Learning race in Pittsburgh in which participants run up and down the steps of the builcing as many times as tney can, One of the winners of the race in 2002, climbed up in 2 minutes and 53 seconds. The mass of the person was 70 kg. The height of the Cathedral is 163 m. Find (a) The amount of work performed by the person. h) The power generated by the person. ALT+F10 (PO or

There is a Cathedral-of-Learning race in Pittsburgh in which participants run up and down the steps of the builcing as many times as tney can, One of the winners of the race in 2002, climbed up in 2 minutes and 53 seconds. The mass of the person was 70 kg. The height of the Cathedral is 163 m. Find (a) The amount of work performed by the person. h) The power generated by the person. ALT+F10 (PO or

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 72P: A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a...

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A cyclist in a race must climb a 5 hill at a speed of 8 m/s. If the mass of the bike and the biker together is 80 kg, what must be the power output of the biker to achieve the goal?
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(a) What is the average useful power output of a person who does 6.00106J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
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