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The material explains why complete, correct diagrams simplify physics problems such as calculating bungee-jumper forces. It introduces common forces (gravity, normal force, tension, friction, and pushes/pulls), discusses limits such as excluding circular motion and advanced angle handling, and walks through basic to more complex examples including stationary blocks and dynamic scenarios.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/free-body-diagrams-how-to-draw-and-use-them-in-physics/665520/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/free-body-diagrams-how-to-draw-and-use-them-in-physics/665520.png","ImageObject",300,407,{"name":92,"@type":93},"LangkahRina","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the main purpose of a free body diagram?","Question",{"text":112,"@type":113},"A free body diagram represents the forces on an object, improving understanding of the situation and supporting problem solving in physics.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should an object be represented when drawing a free body diagram?",{"text":117,"@type":113},"Represent the object as a single point rather than sketching details, and analyze the situation at one specific moment in time.",{"name":119,"@type":110,"acceptedAnswer":120},"Which forces are typically included, and which are excluded in this lesson?",{"text":121,"@type":113},"Include gravity, normal force, tension, pushes or pulls, friction, and similar forces with substantial impact. Exclude circular-motion topics like torque or centripetal force and leave detailed angle treatment for later practice.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},665520,1793304687,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":143},962090893776,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","This is a bungee jumper at the bottom of his trajectory. This is a pack of dogs pulling a s led. And this is a golf ball about to be struck. All of these scenarios can be represented by free body diagrams. Physical problems- -for example , calculating the force on the bungee jumper by the bungee cord- -are much easier to solve once you've drawn a complete and correct free body diagram .  \nThis video is part of the Representations video series.  \nInformation can be represented in words , through mathematical symbols , graphically , or in 3-D models. Representations are used to develop a deeper and more flexible understanding of objects , systems , and processes.  \nHello. My name is John Belcher . I am a professor in the physics department at MIT , and today I' ll be talking with you about free body diagrams. Physics uses many different representations to aid with problem solving. Free body diagrams allow us to represent the forces on an object , thus enhancing our understanding of situations and helping us to solve problems. Studies have shown that students who understand and use free body diagrams tend to score better on homework, quizzes , and exams. Such representations can be powerful tools for solving problems , and remain useful even for physics experts.  \nOur objectives are to improve your skill with free body diagrams and to show some of the connections between them and the physical situations they represent. I hope you find it useful.  \nWe' re going to assume that you have drawn a few free body diagrams in the past , so this video will start with only a short refresher of how to draw them before getting into some more difficult and detailed problems. Here are some guidelines to remember when drawing your free-body diagram . Rather than trying to sketch an object in detail, we' re always going to draw it as a single point. We focus on a single moment in time. Our diagram will onlyinclude forces , and not any other vectors or any other quantities. The arrows we draw for the forces will be longer for stronger forces , and we' ll always draw them as coming from the object. Finally , we' ll want to draw only forces with a substantial impact on the object's behavior , and leave out any that are negligible.  \nThe forces we' ll consider today are primarily those we see in the world around us: gravity , the normal force , tension , hands pushing or pulling , friction , and so forth. We won't be talking about things like the magnetic force , buoyancy , and so forth , but when you encounter those in your courses , they can be treated in exactly the same manner as the forces you' ll see today.  \nTo keep the length of this video down , we've had to leave some things out. The first is anything to do with circular motion , including torque or centripetal force. Dealing with torque requires a more complex approach that you' ll learn later on in your course. The second is a complete lesson on how to deal with angles in forces and free body diagrams.  \nThat is something that you will need to practice on your own in order to really understand well.  \nLet's do a quick refresher on how to draw free-body diagrams. We' ll walk through them one step at a time. If you have some paper available you should draw the diagrams yourself as we go through the steps.  \nThis is very basic example: a falling block. If we ignore air resistance , this is an object with just one force applied: the force of gravity. We' re going to. ..  \ndraw the object as a point , draw the force of gravity as an arrow, and label our force. We' re done.  \nLet's build up to a more complex example. Here's the block on a table , stationary.  \nWe need to draw the object as a point , and draw the force of gravity pulling down on it.  \nOur block is stationary , which means that it is not accelerating. No acceleration means a total force of zero , so we must have at least one more force in place to cancel out the force of gravity. In this case , that cancellation is provided by th","cbCais46CXNJQVOY","https://ap.wps.com/l/cbCais46CXNJQVOY","pdf",29501,"English","# Guidelines for drawing free-body diagrams\n## Represent the object as a point\n## Focus on forces only\n## Choose forces with substantial impact\n# Core forces covered and exclusions\n## Common forces\n## Exclusions: circular motion and angle handling\n# Worked examples\n## Falling block\n## Block on a table\n## Forces added by hands, slopes, and friction\n## Real-world dynamic examples: bungee jumper and dog sled","[{\"question\":\"What is the main purpose of a free body diagram?\",\"answer\":\"A free body diagram represents the forces on an object, improving understanding of the situation and supporting problem solving in physics.\"},{\"question\":\"How should an object be represented when drawing a free body diagram?\",\"answer\":\"Represent the object as a single point rather than sketching details, and analyze the situation at one specific moment in time.\"},{\"question\":\"Which forces are typically included, and which are excluded in this lesson?\",\"answer\":\"Include gravity, normal force, tension, pushes or pulls, friction, and similar forces with substantial impact. Exclude circular-motion topics like torque or centripetal force and leave detailed angle treatment for later practice.\"}]","Free Body Diagrams - How to Draw and Use Them in Physics | PDF",15]