CiteExport$(function(){PrimeFaces.cw("TieredMenu","widget_formSmash_upper_j_idt172",{id:"formSmash:upper:j_idt172",widgetVar:"widget_formSmash_upper_j_idt172",autoDisplay:true,overlay:true,my:"left top",at:"left bottom",trigger:"formSmash:upper:exportLink",triggerEvent:"click"});}); $(function(){PrimeFaces.cw("OverlayPanel","widget_formSmash_upper_j_idt179_j_idt182",{id:"formSmash:upper:j_idt179:j_idt182",widgetVar:"widget_formSmash_upper_j_idt179_j_idt182",target:"formSmash:upper:j_idt179:permLink",showEffect:"blind",hideEffect:"fade",my:"right top",at:"right bottom",showCloseIcon:true});});

Three solutions to the two-body problemPrimeFaces.cw("AccordionPanel","widget_formSmash_some",{id:"formSmash:some",widgetVar:"widget_formSmash_some",multiple:true}); PrimeFaces.cw("AccordionPanel","widget_formSmash_all",{id:"formSmash:all",widgetVar:"widget_formSmash_all",multiple:true});
function selectAll()
{
var panelSome = $(PrimeFaces.escapeClientId("formSmash:some"));
var panelAll = $(PrimeFaces.escapeClientId("formSmash:all"));
panelAll.toggle();
toggleList(panelSome.get(0).childNodes, panelAll);
toggleList(panelAll.get(0).childNodes, panelAll);
}
/*Toggling the list of authorPanel nodes according to the toggling of the closeable second panel */
function toggleList(childList, panel)
{
var panelWasOpen = (panel.get(0).style.display == 'none');
// console.log('panel was open ' + panelWasOpen);
for (var c = 0; c < childList.length; c++) {
if (childList[c].classList.contains('authorPanel')) {
clickNode(panelWasOpen, childList[c]);
}
}
}
/*nodes have styleClass ui-corner-top if they are expanded and ui-corner-all if they are collapsed */
function clickNode(collapse, child)
{
if (collapse && child.classList.contains('ui-corner-top')) {
// console.log('collapse');
child.click();
}
if (!collapse && child.classList.contains('ui-corner-all')) {
// console.log('expand');
child.click();
}
}
PrimeFaces.cw("AccordionPanel","widget_formSmash_responsibleOrgs",{id:"formSmash:responsibleOrgs",widgetVar:"widget_formSmash_responsibleOrgs",multiple:true}); 2013 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
##### Abstract [en]

##### Place, publisher, year, edition, pages

2013. , p. 39
##### Keyword [en]

two-body problem, Newtonian mechanics, classical geometry, Feynman's lost lecture
##### National Category

Mathematics
##### Identifiers

URN: urn:nbn:se:lnu:diva-26781OAI: oai:DiVA.org:lnu-26781DiVA, id: diva2:630427
##### Subject / course

Mathematics
#####

PrimeFaces.cw("AccordionPanel","widget_formSmash_j_idt603",{id:"formSmash:j_idt603",widgetVar:"widget_formSmash_j_idt603",multiple:true});
##### Supervisors

PrimeFaces.cw("AccordionPanel","widget_formSmash_j_idt611",{id:"formSmash:j_idt611",widgetVar:"widget_formSmash_j_idt611",multiple:true});
##### Examiners

PrimeFaces.cw("AccordionPanel","widget_formSmash_j_idt618",{id:"formSmash:j_idt618",widgetVar:"widget_formSmash_j_idt618",multiple:true});
Available from: 2013-06-19 Created: 2013-06-18 Last updated: 2013-06-19Bibliographically approved

The two-body problem consists of determining the motion of two gravitationally interacting bodies with given masses and initial velocities. The problem was first solved by Isaac Newton in 1687 using geometric arguments. In this thesis, we present selected parts of Newton's solution together with an alternative geometric solution by Richard Feynman and a modern solution using differential calculus. All three solutions rely on the three laws of Newton and treat the two bodies as point masses; they differ in their approach to the the three laws of Kepler and to the inverse-square force law. Whereas the geometric solutions aim to prove some of these laws, the modern solution provides a method for calculating the positions and velocities given their initial values.

It is notable that Newton in his most famous work *Principia*, where the general law of gravity and the solution to the two-body problem are presented, used mathematics that is not widely studied today. One might ask if today's low emphasis on classical geometry and conic sections affects our understanding of classical mechanics and calculus.

urn-nbn$(function(){PrimeFaces.cw("Tooltip","widget_formSmash_j_idt1735",{id:"formSmash:j_idt1735",widgetVar:"widget_formSmash_j_idt1735",showEffect:"fade",hideEffect:"fade",showDelay:500,hideDelay:300,target:"formSmash:altmetricDiv"});});

CiteExport$(function(){PrimeFaces.cw("TieredMenu","widget_formSmash_lower_j_idt1898",{id:"formSmash:lower:j_idt1898",widgetVar:"widget_formSmash_lower_j_idt1898",autoDisplay:true,overlay:true,my:"left top",at:"left bottom",trigger:"formSmash:lower:exportLink",triggerEvent:"click"});}); $(function(){PrimeFaces.cw("OverlayPanel","widget_formSmash_lower_j_idt1900_j_idt1902",{id:"formSmash:lower:j_idt1900:j_idt1902",widgetVar:"widget_formSmash_lower_j_idt1900_j_idt1902",target:"formSmash:lower:j_idt1900:permLink",showEffect:"blind",hideEffect:"fade",my:"right top",at:"right bottom",showCloseIcon:true});});