A large horizontal circular platform (M=98.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=73.3 kg) walks slowly from the rim of the platform toward the center. The angular velocity w of the system is 4.70 rad/s when the student is at the rim. Find w (in rad/s) when the student is 2.75 m from the center. Submit Answer Tries 0/10

A large horizontal circular platform (M=98.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=73.3 kg) walks slowly from the rim of the platform toward the center. The angular velocity w of the system is 4.70 rad/s when the student is at the rim. Find w (in rad/s) when the student is 2.75 m from the center. Submit Answer Tries 0/10

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A 200 g spring loaded projectile launcher is used to launch a 10 g projectile. If the spring (spring constant 22 N/m) is compressed by 6.5 cm when the trigger is released, with what speed (in m/s) will the projectile launch immediately after the spring is released completely? An 10 cm diameter fan starting from rest, accelerates uniformly, completing 30 revolutions in 14.2 seconds. What is the angular acceleration of the fan in rad/s2.
A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.745 m from the axis of rotation, which passes through her head into the center of the stool. When she symmetrically pulls the weights in closer to her body, her angular speed increases to 40.5 rpm. Neglecting the mass of the professor, how far are the weights from the rotational axis after she pulls her arms in? distance: about us careers privacy policy terms of use contact us help tv W MacBook Air 8828
A bottle is initially spinning with an angular velocity of ω = 1.5 rad/s. Over the span of t = 3.9 seconds the bottle angularly accelerates with α = 1.5 rad/s2. What is the angular velocity of the bottle after the 3.9 s?
Three children are riding on the edge of a merry-go-round that has a mass of 105 kg and a radius of 1.50 m. The merry-go-round is spinning at 18.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry-go-round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry-go-round can be treated as a solid disk and the children as point masses. Question Credit: OpenStax College Physics 19.5 final angular velocity: rpm Incorrect
A 234 kg boat is negotiating a circular turn (radius = 33.1 m) around a buoy. During the turn, the engine causes a net tangential force of magnitude 995 N to be applied to the boat. The initial tangential speed of the boat going into the turn is 20.6 m/s. Find the angular velocity after 2.5 seconds. Use g=9.8
A cylinder 37.0 cm in diameter is at rest initially. It is then given an angular acceleration of 0.068 rad/s^2. Find the angular velocity at 5.26 s. Give your answer in rad.
A figure skater performs a twisting jump. She rotates around her longitudinal axis 2 times in 0.65 s. What was her average angular velocity in radians/second? A 720rad/s B 19.3rad/s C 4? rad/s D 9.67 rad/s E 1107 rad/s
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 2.36 m and a rotational inertia of 218 kg-m2 about the axis of rotation. A 72.6 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.07 rad/s when the student starts at the rim, what is the angular speed when she is 0.433 m from the center? Number i Units
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk.The platform has a mass of 150 kg, a radius of 2.0 m, and a rotational inertia of 300 kgm2 about the axis of rotation.A 60 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.5 rad/s when the student starts at the rim, what is the angular speed when she is 0.50 m from the center?
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 2.79 m and a rotational inertia of 149 kg-m? about the axis of rotation. A 76.1 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.84 rad/s when the student starts at the rim, what is the angular speed when she is 1.84 m from the center? Number i Units
Your grandmother enjoys creating pottery as a hobby. She uses a potter's wheel, which is a stone disk of radius R = 0.540 m and mass M = 100 kg. In operation, the wheel rotates at 45.0 rev/min. While the wheel is spinning, your grandmother works clay at the center of the wheel with her hands into a pot-shaped object with circular symmetry. When the correct shape is reached, she wants to stop the wheel in as short a time interval as possible, so that the shape of the pot is not further distorted by the rotation. She pushes continuously with a wet rag as hard as she can radially inward on the edge of the wheel and the wheel stops in 6.00 s. You would like to build a brake to stop the wheel in a shorter time interval, but you must determine the coefficient of friction (?k) between the rag and the wheel in order to design a better system. You determine that the maximum pressing force your grandmother can sustain for 6.00 s is 65.0 N. What If? If your grandmother instead chooses to press…
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center of the disk. The platform has a radius of 1.10 m and a rotational inertia of 429 kg-m? about the axis of rotation. A 54.4 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 1.33 rad/s when the student starts at the rim, what is the angular speed when she is 0.404 m from the center? Number Units rad/s