A 31.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the swing make an angle of 28.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the lowest position is 2.60 m/s, what is the mechanical energy lost due to friction?

A 31.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the swing make an angle of 28.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the lowest position is 2.60 m/s, what is the mechanical energy lost due to friction?

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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