4) A 25.0-kg child on a 2.00-m-long swing is released from rest when the ropes of the swing make an angle of 30.00 with the vertical. (a) Neglecting friction, find the child’s speed at the lowest position. (b) If the actual speed of the child at the lowest position is 2.00 m/s, what is the mechanical energy lost due to friction?
4) A 25.0-kg child on a 2.00-m-long swing is released from rest when the ropes of the swing make an angle of 30.00 with the vertical. (a) Neglecting friction, find the child’s speed at the lowest position. (b) If the actual speed of the child at the lowest position is 2.00 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
Chapter5: Energy
Section: Chapter Questions
Problem 44P: A 25.0-kg child on a 2.00-m-long swing is released from rest when the ropes of the swing make an...
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4) A 25.0-kg child on a 2.00-m-long swing is released from rest when the ropes of the swing make an angle of 30.00 with the vertical. (a) Neglecting friction, find the child’s speed at the lowest position. (b) If the actual speed of the child at the lowest position is 2.00 m/s, what is the mechanical energy lost due to friction?
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