A large wooden turntable in the shape of a flat uniform disk has a radius of 2.0 m and a total mass of 120 kg. The turntable is initially rotating at 3.0 rad/s about a vertical axis through its center. If one applies a constant force tangentially to the edge of the turntable, one can slow down and а. eventually stop the turntable. What magnitude of such a force (constant) should be applied to stop the turntable in 30.0 seconds? b. paars While the turntable is rotating at 3.0 rad/s, if a 70.0 kg parachutist makes a soft landing on the turntable at a point near the outer edge. Find the angular speed of the turntable after the parachutist lands. (you can treat the parachutist as point particle.) Moment of inertia for a disk: I em =MR? %3D
A large wooden turntable in the shape of a flat uniform disk has a radius of 2.0 m and a total mass of 120 kg. The turntable is initially rotating at 3.0 rad/s about a vertical axis through its center. If one applies a constant force tangentially to the edge of the turntable, one can slow down and а. eventually stop the turntable. What magnitude of such a force (constant) should be applied to stop the turntable in 30.0 seconds? b. paars While the turntable is rotating at 3.0 rad/s, if a 70.0 kg parachutist makes a soft landing on the turntable at a point near the outer edge. Find the angular speed of the turntable after the parachutist lands. (you can treat the parachutist as point particle.) Moment of inertia for a disk: I em =MR? %3D
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 10P: A wheel 2.00 m in diameter lies in a vertical plane and rotates about its central axis with a...
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Angular speed, acceleration and displacement
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Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
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