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Chapter 6: Q6.3-3CQ (page 218)
If you wish to reduce the stress (which is related to centripetal force) on high-speed tires, would you use large- or small-diameter tires? Explain.
Centripetal is the force that acted on a body in a circle always the effective inward direction of the circular path.
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Two friends are having a conversation. Anna says a satellite in orbit is in freefall because the satellite keeps falling toward Earth. Tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not . Who do you agree with and why?
What is the ideal speed to take a \(100{\rm{ m}}\) radius curve banked at \(20.0^\circ \) angle?
Find the mass of Jupiter based on data for the orbit of one of its moons, and compare your result with its actual mass.
What is the ideal banking angle for a gentle turn of \(1.20{\rm{ km}}\) radius on a highway with a \(105{\rm{ km}}/{\rm{h}}\) speed limit (about \(65{\rm{ mi}}/{\rm{h}}\)), assuming everyone travels at the limit?
Action at a distance, such as is the case for gravity, was once thought to be illogical and therefore untrue. What is the ultimate determinant of the truth in physics, and why was this action ultimately accepted?
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