Consider the diagram for question 2. A person of mass 70.5 kg is on a roller coaster at the top of the first hill with speed 4.29 m/s. The top of the first hill is at a height of 20.4 Im above the ground. Position B is situated atop a hill that we can approximate using a circle of radius 13.9 m. At B, the person experiences a net force precisely equal to the force of gravity, Fg = mg[down]. Througout the ride, assume perfect conservation of mechanical energy. a) Calculate the total work done on the person from the starting position to position B. Hint: Find the speed at B and use the work-energy theorem. b) Calculate the height of B above the ground. A B

Consider the diagram for question 2. A person of mass 70.5 kg is on a roller coaster at the top of the first hill with speed 4.29 m/s. The top of the first hill is at a height of 20.4 Im above the ground. Position B is situated atop a hill that we can approximate using a circle of radius 13.9 m. At B, the person experiences a net force precisely equal to the force of gravity, Fg = mg[down]. Througout the ride, assume perfect conservation of mechanical energy. a) Calculate the total work done on the person from the starting position to position B. Hint: Find the speed at B and use the work-energy theorem. b) Calculate the height of B above the ground. A B

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 10P

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