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Problem 73. 74. Consider a train that rounds a curve with a radius of 570 m at a speed of 160 km/h (approximately 100 mi/h). (a) Calculate the friction force needed on a train pas- senger of mass 55 kg if the track is not banked and the train does not tilt. (b) Calculate the friction force on the passenger if the train tilts at an angle of 8.0° toward the center of the curve.

Problem 73. 74. Consider a train that rounds a curve with a radius of 570 m at a speed of 160 km/h (approximately 100 mi/h). (a) Calculate the friction force needed on a train pas- senger of mass 55 kg if the track is not banked and the train does not tilt. (b) Calculate the friction force on the passenger if the train tilts at an angle of 8.0° toward the center of the curve.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Problem 75. 74. Consider a train that rounds a curve with a radius of 570 m at a speed of 160 km/h (approximately 100 mi/h). (a) Calculate the friction force needed on a train pas- senger of mass 55 kg if the track is not banked and the train does not tilt. (b) Calculate the friction force on the passenger if the train tilts at an angle of 8.0° toward the center of the curve. 75. Two equal-mass stars maintain a constant distance apart of 8.0 x 10" m and revolve about a point midway between them at a rate of one revolution every 12.6 yr. (a) Why don't the two stars crash into one another due to the 85. gravitational force between them? (b) What must be the mass of each star?
Transcribed Image Text:Problem 75. 74. Consider a train that rounds a curve with a radius of 570 m at a speed of 160 km/h (approximately 100 mi/h). (a) Calculate the friction force needed on a train pas- senger of mass 55 kg if the track is not banked and the train does not tilt. (b) Calculate the friction force on the passenger if the train tilts at an angle of 8.0° toward the center of the curve. 75. Two equal-mass stars maintain a constant distance apart of 8.0 x 10" m and revolve about a point midway between them at a rate of one revolution every 12.6 yr. (a) Why don't the two stars crash into one another due to the 85. gravitational force between them? (b) What must be the mass of each star?
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