{"id":3947,"date":"2023-01-09T10:40:50","date_gmt":"2023-01-09T10:40:50","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3947"},"modified":"2024-11-25T11:00:23","modified_gmt":"2024-11-25T11:00:23","slug":"s-11-f-contact-forces","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-11-f-contact-forces\/","title":{"rendered":"s-11.f Contact Forces"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color has-huge-font-size\" style=\"color:#00056d;text-transform:uppercase\"><strong>Contact Forces<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/Contact-Forces.jpg\" alt=\"\" class=\"wp-image-11817\" style=\"width:622px;height:auto\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/Contact-Forces.jpg 1000w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/Contact-Forces-300x150.jpg 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/09\/Contact-Forces-768x384.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-1dab16ce31dbaa262bc1ec7e093d0897\" style=\"color:#74008b\"> key notes:<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>1. What are Contact Forces?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Contact forces are forces that act on an object through direct physical contact with another object.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>2. Types of Contact Forces:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\"><strong>Frictional Force:<\/strong> This force opposes the motion or attempted motion of two objects in contact. It depends on the nature of the surfaces and the force pressing them together.<\/li>\n\n\n\n<li class=\"has-large-font-size\"><strong>Normal Force:<\/strong> This force acts perpendicular to the surface of contact and supports the weight of an object resting on a surface.<\/li>\n\n\n\n<li class=\"has-large-font-size\"><strong>Tension Force:<\/strong> Tension is a force experienced when a rope, string, or cable is pulled.<\/li>\n\n\n\n<li class=\"has-large-font-size\"><strong>Compression Force:<\/strong> Compression is a force that pushes or squeezes objects together.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>3. Frictional Force:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\"><strong>Static Friction:<\/strong> The force of static friction prevents an object from starting to move when a force is applied. It has a maximum value but can vary.<\/li>\n\n\n\n<li class=\"has-large-font-size\"><strong>Kinetic Friction:<\/strong> Once an object is in motion, kinetic friction opposes its motion and is generally less than static friction.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>4. Factors Affecting Friction:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">The roughness of the surfaces in contact.<\/li>\n\n\n\n<li class=\"has-large-font-size\">The normal force (greater normal force increases friction).<\/li>\n\n\n\n<li class=\"has-large-font-size\">The type of materials in contact.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>5. Normal Force:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">The normal force is always perpendicular to the surface and supports the weight of an object on a surface.<\/li>\n\n\n\n<li class=\"has-large-font-size\">It varies with the angle of inclination or on inclined planes.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>6. Tension Force:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Tension in a rope or string is transmitted throughout the entire length of the rope.<\/li>\n\n\n\n<li class=\"has-large-font-size\">Tension is equal in magnitude but opposite in direction at each end of the rope.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>7. Compression Force:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">Compression forces push objects together.<\/li>\n\n\n\n<li class=\"has-large-font-size\">Structures like columns and beams experience compression forces.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>8. Balancing Forces:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">When an object is at rest or moving with constant velocity, the net force acting on it is zero. This concept is described by Newton&#8217;s first law of motion.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>9. Newton&#8217;s Third Law of Motion:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-large-font-size\">For every action, there is an equal and opposite reaction. In the context of contact forces, this means that when one object exerts a force on another, the second object exerts an equal and opposite force.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>10. Applications:<\/strong> &#8211; Understanding contact forces is essential in various real-life situations, such as walking (friction with the ground), driving (tires and road friction), and building structures (compression and tension in materials).<\/p>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/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\/82633\/657\/450\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-107.png\" alt=\"\" class=\"wp-image-7844\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-107.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-107-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-2-107-150x150.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\/81649\/160\/408\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-106.png\" alt=\"\" class=\"wp-image-7845\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-106.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-106-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-1-106-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Contact Forces key notes: 1. What are Contact Forces? 2. Types of Contact Forces: 3. Frictional Force: 4. Factors Affecting Friction: 5. Normal Force: 6. Tension Force: 7. Compression Force: 8. Balancing Forces: 9. Newton&#8217;s Third Law of Motion: 10. Applications: &#8211; Understanding contact forces is essential in various real-life situations, such as walking (friction<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/s-11-f-contact-forces\/\">Continue reading <span class=\"screen-reader-text\">&#8220;s-11.f Contact Forces&#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-3947","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3947"}],"version-history":[{"count":16,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3947\/revisions"}],"predecessor-version":[{"id":18976,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3947\/revisions\/18976"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}