42. M V-HINT A 15.0-m length of hose is wound around a reel, which is initially at rest. The moment of inertia of the reel is o.44 kg · m², and its radius is o.160 m. When the reel is turning, friction at the axle exerts a torque of magnitude 3.40 N · m on the reel. If the hose is pulled so that the tension in it remains a constant 25.0 N, how long does it take to completely unwind the hose from the reel? Neglect the mass and thickness of the hose on the reel, and assume that the hose unwinds without slipping.
42. M V-HINT A 15.0-m length of hose is wound around a reel, which is initially at rest. The moment of inertia of the reel is o.44 kg · m², and its radius is o.160 m. When the reel is turning, friction at the axle exerts a torque of magnitude 3.40 N · m on the reel. If the hose is pulled so that the tension in it remains a constant 25.0 N, how long does it take to completely unwind the hose from the reel? Neglect the mass and thickness of the hose on the reel, and assume that the hose unwinds without slipping.
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)...
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Transcribed Image Text:**Problem Statement:**
A 15.0-meter length of hose is wound around a reel, which is initially at rest. The moment of inertia of the reel is 0.44 kg·m², and its radius is 0.160 meters. When the reel is turning, friction at the axle exerts a torque of magnitude 3.40 N·m on the reel. If the hose is pulled so that the tension in it remains a constant 25.0 N, how long does it take to completely unwind the hose from the reel? Neglect the mass and thickness of the hose on the reel, and assume that the hose unwinds without slipping.
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