6. What is the ideal banking angle for a gentle turn of 1.20 km radius on a highway with a 30.0 m/s speed limit? 7. (a) Calculate the gravitational force exerted on a 4.20 kg baby by a 100 kg father 0.200 m away. (b) Calculate the grávitational force exerted on a 100 kg father by a 4.20 kg baby 0.200 m away.

6. What is the ideal banking angle for a gentle turn of 1.20 km radius on a highway with a 30.0 m/s speed limit? 7. (a) Calculate the gravitational force exerted on a 4.20 kg baby by a 100 kg father 0.200 m away. (b) Calculate the grávitational force exerted on a 100 kg father by a 4.20 kg baby 0.200 m away.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 8WUE: A car of mass 1 230 kg travels along a circular road of radius 60.0 m at 18.0 m/s. (a) Calculate the...

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Suppose an alien civilization has a space station in circular orbit around its home planet. The stations orbital radius is twice the planets radius, (a) If an alien astronaut has weight w just before launch from the surface, will she be weightless when she reaches the station and floats inside of it? (b) If not, what will be the ratio of her weight in orbit to her weight on the planets surface?
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Modem roller coasters have vertical loops like the one shown here. The radius of curvature is smaller at the top than on the sides so that the downward centripetal acceleration at the top will be greater than the acceleration due to gravity, keeping the passengers pressed firmly into their seats. (a) What is the speed of the roller coaster at the top of the loop if the radius of curvature there is 15.0 m and the downward acceleration of the car is 1.50 g ? (b) How high above the top of the loop must the roller coaster start from rest, assuming negligible friction? (c) If it actually starts 5.00 m higher than your answer to (b), how much energy did it lose to friction? Its mass is 1.50103kg .
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