{"id":3709,"date":"2023-01-09T10:19:09","date_gmt":"2023-01-09T10:19:09","guid":{"rendered":"https:\/\/9thclass.deltapublications.in\/?page_id=3709"},"modified":"2025-11-06T05:33:55","modified_gmt":"2025-11-06T05:33:55","slug":"s-10-a-gravitation","status":"publish","type":"page","link":"https:\/\/9thclass.deltapublications.in\/index.php\/s-10-a-gravitation\/","title":{"rendered":"S-10.a Gravitation"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Gravitation<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-video\"><video autoplay controls src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/gravitation.mp4\"><\/video><\/figure>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#b00012\"><strong>What is Gravitation?<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"670\" height=\"372\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/image-removebg-preview-7.png\" alt=\"\" class=\"wp-image-10950\" style=\"aspect-ratio:1.8010752688172043;width:376px;height:auto\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/image-removebg-preview-7.png 670w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/11\/image-removebg-preview-7-300x167.png 300w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-b032a97f1ffcb6660b8b61a356a8320a\" style=\"color:#000060\">\u2b50 <strong>What is Gravitation?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gravitation is the <strong>force of attraction<\/strong> between any two objects in the universe. \ud83c\udf0c<\/li>\n\n\n\n<li>This universal attraction is known as <strong>gravitational force<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-0578d8625784c2d1a991ac1d56df90ee\" style=\"color:#000060\">\ud83e\uddf2 <strong>Newton\u2019s Universal Law of Gravitation<\/strong><\/h3>\n\n\n\n<p>Sir Isaac Newton stated that:<br><strong>\u201cEvery object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.\u201d<\/strong> \ud83d\udcd8<\/p>\n\n\n\n<p>\ud83d\udccd <strong>Formula:<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center\"> F = G<sup>m1m2<\/sup> \/ r2<\/p>\n\n\n\n<p>Where:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>F = Gravitational force<\/li>\n\n\n\n<li>G = Universal Gravitational Constant<\/li>\n\n\n\n<li>m<sub>1<\/sub>,m<sub>2<\/sub>\u200b = Masses of the two objects<\/li>\n\n\n\n<li>r = Distance between their centers<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-01d9f4be183528d25e55187fddabc665\" style=\"color:#000060\">\ud83d\udd22 <strong>Universal Gravitational Constant (G)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>G = 6.67 \u00d7 10<sup>\u221211<\/sup>\u2009N\u00a0m<sup>2<\/sup>\/kg<sup>2<\/sup><\/li>\n\n\n\n<li>It is <strong>constant throughout the universe<\/strong> \ud83c\udf20<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-567448735822ec565003684ee24fce20\" style=\"color:#000060\">\ud83e\ude82 <strong>Gravity (g)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gravity is the <strong>force with which Earth attracts objects towards its center<\/strong>.<\/li>\n\n\n\n<li><strong>Acceleration due to gravity<\/strong>:<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\">g = 9.8\u2009m\/s<sup>2<\/sup><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Value of <strong>g decreases with height and depth<\/strong> \ud83c\udfd4\ufe0f\ud83d\udd73\ufe0f<\/li>\n\n\n\n<li><strong>g is slightly higher at poles<\/strong> and lower at equator \ud83c\udf0f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-f483754b631fd81a62162cc4975a6532\" style=\"color:#000060\">\u2696\ufe0f <strong>Mass vs Weight<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Mass<\/strong> \ud83e\uddcd<\/th><th><strong>Weight<\/strong> \u2696\ufe0f<\/th><\/tr><\/thead><tbody><tr><td>Amount of matter<\/td><td>Force of gravity on object<\/td><\/tr><tr><td>Constant everywhere<\/td><td>Changes with gravity<\/td><\/tr><tr><td>Unit: kg<\/td><td>Unit: Newton (N)<\/td><\/tr><tr><td>Scalar quantity<\/td><td>Vector quantity<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Formula: W = mg<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-90e525faed36b7ad584e38f003de866b\" style=\"color:#000060\">\ud83d\ude80 <strong>Free Fall<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When an object falls <strong>only under the influence of gravity<\/strong>, it is called <strong>free fall<\/strong>.<\/li>\n\n\n\n<li>During free fall, <strong>acceleration = g<\/strong> \ud83c\udf20<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-e8351e246ed8850f89fef2a3233fbbf2\" style=\"color:#000060\">\ud83d\udccf <strong>Equations of Motion for Free Fall<\/strong><\/h3>\n\n\n\n<p>Replace \u201ca\u201d with \u201cg\u201d:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>v = u + gt<\/li>\n\n\n\n<li>s = ut + 1\/2gt<sup>2<\/sup><\/li>\n\n\n\n<li>v<sup>2<\/sup> = u<sup>2<\/sup> + 2gs<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-137717db603c84358eabdc7f6e793301\" style=\"color:#000060\">\ud83c\udf0a <strong>Thrust &amp; Pressure<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thrust<\/strong>: Force acting on a surface.<\/li>\n\n\n\n<li><strong>Pressure<\/strong>: Thrust per unit area.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><strong>Pressure=Thrust \/ Area<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-daf0d4add2bbaa110ef042ad0e6ab24a\" style=\"color:#000060\">\u2693 <strong>Buoyancy &amp; Archimedes\u2019 Principle<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When an object is immersed in a fluid, it experiences an <strong>upward force called Buoyant Force<\/strong> \u26f5<\/li>\n\n\n\n<li><strong>Archimedes\u2019 Principle<\/strong>:<br><em>The upward buoyant force is equal to the weight of the fluid displaced by the body.<\/em><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color has-large-font-size wp-elements-e1632ca845175ed28a7eecf83bd06620\" style=\"color:#000060\">\ud83e\uddea <strong>Density and Relative Density<\/strong><\/h3>\n\n\n\n<p>\\text{Density} = \\frac{\\text{Mass}}{\\text{Volume}}<br>]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Relative Density<\/strong> = Ratio of density of a substance to the density of water.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\">Let&#8217;s Practice!<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/77180\/272\/720\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1.png\" alt=\"\" class=\"wp-image-5856\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-2-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/80483\/002\/235\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1.png\" alt=\"\" class=\"wp-image-5857\" srcset=\"https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1.png 500w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1-300x300.png 300w, https:\/\/9thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Worksheet-1-1-1-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Gravitation What is Gravitation? \u2b50 What is Gravitation? \ud83e\uddf2 Newton\u2019s Universal Law of Gravitation Sir Isaac Newton stated that:\u201cEvery object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.\u201d \ud83d\udcd8 \ud83d\udccd Formula: F<a class=\"more-link\" href=\"https:\/\/9thclass.deltapublications.in\/index.php\/s-10-a-gravitation\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-10.a Gravitation&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3709","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3709"}],"version-history":[{"count":50,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3709\/revisions"}],"predecessor-version":[{"id":18227,"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3709\/revisions\/18227"}],"wp:attachment":[{"href":"https:\/\/9thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}