Q9 - HW05 - Circular Motion, Gravity, Work and Energy

Problem 7.41 - Enhanced - with Solution

V PartA What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the A 28.0 kg child plays on a swing having support swing? ropes that are 2.40 m long. A friend pulls her back until the ropes are 45.0 from the vertical and releases her from rest. You may want to review (Page) . For related problem-solving tips and strategies, you U = J may want to view a Video Tutor Solution of Calculating _speed along a vertical circle. m muest Answer V Part B How fast will she be moving at the bottom of the swing? .Am-ao? m muest Answer V PartC How much work does the tension in the ropes do as the child swings from the initial position to the bottom? .Am-ao