A 320-N child is in a swing that is attached to a pair of ropes 2.20 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a 26.0° angle with the vertical (c) when the child is at the bottom of the circular arc

A 320-N child is in a swing that is attached to a pair of ropes 2.20 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a 26.0° angle with the vertical (c) when the child is at the bottom of the circular arc

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.15P: Two 12-kg spheres are placed 400 mm apart. Express the gravitational attraction acting between the...

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Find the elevation h (km) where the weight of an object is one-tenth its weight on the surface of the earth.
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A 250-N child is in a swing that is attached to a pair of ropes 1.80 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a 28.0° angle with the vertical (c) when the child is at the bottom of the circular arc
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