College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- - A subway train consisting of 3 cars moves on a straight track with a velocity of 1.1 meters per second. The mass of each car 3,119 kilograms. What is the total linear momentum of the train? Use kg m/s as unit. - A wind turbine has a moment of inertia of 1,265 kg m2. What is the angular momentum L of the turbine if its period of rotation is 3.16 seconds? Note, use "kg m2/s" (without the quotes) for the unit of the rotational momentum in your answer. - A 0.14 kg solid billiard ball with a radius of 0.1 m is rolling on a pool table with a speed of 1.12 m/s without slipping. Find the angular momentum of the ball. (unit in kg m2/s)arrow_forwardThe dung beetle is known as one of the strongest animals for its size, often forming balls of dung up to 10 times their own mass and rolling them to locations where they can be buried and stored as food. A typical dung ball formed by the species K. nigroaeneus has a radius of 1.85 cm and is rolled by the beetle at 6.20 cm/s.arrow_forwardA student places a coin on a flat disk. The flat disk is allowed to rotate around an axis through its center. The angular velocity of the flat disk gradually increases. The coin initially rotates with the disk but eventually slides off the disk. Which of the following is the best explanation for the coin's behavior? The kinetic friction was no longer large enough to provide the necessary angular acceleration The kinetic friction was no longer large enough to provide the necessary centripetal acceleration The static friction was no longer large enough to provide the necessary angular acceleration The static friction was no longer large enough to provide the necessary centripetal accelerationarrow_forward
- A 4-Kilogram object slides, on a smooth surface, towards the north at a velocity of 5 meters per second. The object hits a fixed pole and is deflected from north to east by an angle of 60° and has a velocity of 5 meters per second. The change in the magnitude of the northward component of the moment of the object isarrow_forwardA 1140 kg1140 kg car has just passed a diner. The closest the car came to the diner was ?=24.5 mR=24.5 m, but the car has driven another ?=30.7 mx=30.7 m in the 2.65 s2.65 s elapsed since then. If the car travels at constant speed, what is the current magnitude ?L of the angular momentum of the car about the diner?arrow_forwardA figure skater has a mass of 65 kg and an angular momentum of 200 kg*m2/s during a camel spin. During this spin, the average radius of gyration changes from 0.33 meters to 0.65 meters in 0.62 seconds. What is the figure skater’s average angular acceleration in degrees/s2 during this 0.62 seconds?arrow_forward
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