21 F2 A bar of length l rotates about one of its edges. After you push it with a force of F1 = 10 N perpendicularly to the the bar at its outer edge for s seconds, its angular velocity is w. If the bar had the same mass but double the length, what is the magnitude of force F2 you have to push such that the bar will move at the same angular velocity? Assume the time that you apply the force is the same. The moment of inertia of a bar about its edge is ML². Pick the correct answer о 2.5 N O 20 N O 5.0 N O 40 N о 3.3 N 130–

21 F2 A bar of length l rotates about one of its edges. After you push it with a force of F1 = 10 N perpendicularly to the the bar at its outer edge for s seconds, its angular velocity is w. If the bar had the same mass but double the length, what is the magnitude of force F2 you have to push such that the bar will move at the same angular velocity? Assume the time that you apply the force is the same. The moment of inertia of a bar about its edge is ML². Pick the correct answer о 2.5 N O 20 N O 5.0 N O 40 N о 3.3 N 130–

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 43P: A circular disk of radius 10 cm has a contant angular acceleration of 1.0rad/s2 ; at t=0 its angular...

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