Car o Flat 1. A car travels at a steady 40.0 m/s around a horizontal curve of radius 200 m. a) Draw a FBD and apply Newton's Laws. b) What is the minimum coefficient of static friction between the road and the car's tires that will allow the car to travel at this speed without sliding? 2. A car enters a 300-m radius horizontal curve on a rainy day when the coefficient of static friction between its tires and the road is 0.600. Car What is the maximum speed at which the car can travel around this curve without sliding? 3. A 600-kg car is going around a banked curve with a radius of 110 m at a speed of 24.5 m/s. Car What is the appropriate banking angle so that the car stays on its path without the assistance of friction? 29° 4. A Ferris wheel has diameter of 10 m and makes one revolution in 8.0 seconds. A person weighing 670 N is sitting on one of the benches attached at the rim of the wheel. What is the apparent weight (that is, the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion? What is the apparent weight (that is, the normal force exerted on her by the bench) of the Lerris werson as she passes through the lowest point of her motion? Wergetng Top T8.0 se R 5 m CARavitional toina) Draw a FBD for the satellite. 5. An Earth satellite moves in a circular orbit with an orbital speed of 6200 m/s. 1A Bottom b) Find the time for one revolution of the satellite. c) Find the radial acceleration of the satellite in its orbit. 6. The figure shows two wires that are tied to a 710 g mass that revolves in a horizontal circle at a constant speed of 7.5 m/s. What is the tension in the upper wire? 0.50 m 1.0 m 0.50 m 1.0 m

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.