{"id":90002,"date":"2025-06-01T10:18:54","date_gmt":"2025-06-01T10:18:54","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90002"},"modified":"2025-06-01T10:18:54","modified_gmt":"2025-06-01T10:18:54","slug":"a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/","title":{"rendered":"A piece of stone tied to a string is made to revolve in a circular orb"},"content":{"rendered":"

A piece of stone tied to a string is made to revolve in a circular orbit of radius r with other end of the string as the centre. If the string breaks, the stone will :<\/p>\n

[amp_mcq option1=”move away from the centre.” option2=”move towards the centre.” option3=”move along a tangent.” option4=”stop.” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nWhen an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. The string provides the centripetal force required to keep the object moving in a circular path, constantly changing its direction. If the string breaks, this centripetal force is removed. According to Newton’s first law of motion (the law of inertia), an object in motion will continue in a straight line with constant speed unless acted upon by an external force. Therefore, the stone will move in a straight line along the direction of its instantaneous velocity at the moment the string breaks, which is tangential to the circular orbit.
\n<\/section>\n
\nUnderstanding inertia and tangential velocity in circular motion is key to predicting the motion of an object when the centripetal force is removed.
\n<\/section>\n
\nThis phenomenon demonstrates Newton’s first law and the nature of velocity in circular motion. The stone does not move away from the center (that would imply a radially outward force, which doesn’t exist upon breaking), nor does it move towards the center (as the inward centripetal force is gone), nor does it stop (unless there is friction or air resistance acting).
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

A piece of stone tied to a string is made to revolve in a circular orbit of radius r with other end of the string as the centre. If the string breaks, the stone will : [amp_mcq option1=”move away from the centre.” option2=”move towards the centre.” option3=”move along a tangent.” option4=”stop.” correct=”option3″] This question was … <\/p>\n

Detailed SolutionA piece of stone tied to a string is made to revolve in a circular orb<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1098,1129,1128],"class_list":["post-90002","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1098","tag-mechanics","tag-physics","no-featured-image-padding"],"yoast_head":"\nA piece of stone tied to a string is made to revolve in a circular orb<\/title>\n<meta name=\"description\" content=\"When an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. The string provides the centripetal force required to keep the object moving in a circular path, constantly changing its direction. If the string breaks, this centripetal force is removed. According to Newton's first law of motion (the law of inertia), an object in motion will continue in a straight line with constant speed unless acted upon by an external force. Therefore, the stone will move in a straight line along the direction of its instantaneous velocity at the moment the string breaks, which is tangential to the circular orbit. Understanding inertia and tangential velocity in circular motion is key to predicting the motion of an object when the centripetal force is removed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A piece of stone tied to a string is made to revolve in a circular orb\" \/>\n<meta property=\"og:description\" content=\"When an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. The string provides the centripetal force required to keep the object moving in a circular path, constantly changing its direction. If the string breaks, this centripetal force is removed. According to Newton's first law of motion (the law of inertia), an object in motion will continue in a straight line with constant speed unless acted upon by an external force. Therefore, the stone will move in a straight line along the direction of its instantaneous velocity at the moment the string breaks, which is tangential to the circular orbit. Understanding inertia and tangential velocity in circular motion is key to predicting the motion of an object when the centripetal force is removed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:18:54+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"A piece of stone tied to a string is made to revolve in a circular orb","description":"When an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. 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Understanding inertia and tangential velocity in circular motion is key to predicting the motion of an object when the centripetal force is removed.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/","og_locale":"en_US","og_type":"article","og_title":"A piece of stone tied to a string is made to revolve in a circular orb","og_description":"When an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. The string provides the centripetal force required to keep the object moving in a circular path, constantly changing its direction. If the string breaks, this centripetal force is removed. According to Newton's first law of motion (the law of inertia), an object in motion will continue in a straight line with constant speed unless acted upon by an external force. Therefore, the stone will move in a straight line along the direction of its instantaneous velocity at the moment the string breaks, which is tangential to the circular orbit. Understanding inertia and tangential velocity in circular motion is key to predicting the motion of an object when the centripetal force is removed.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:18:54+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/","url":"https:\/\/exam.pscnotes.com\/mcq\/a-piece-of-stone-tied-to-a-string-is-made-to-revolve-in-a-circular-orb\/","name":"A piece of stone tied to a string is made to revolve in a circular orb","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:18:54+00:00","dateModified":"2025-06-01T10:18:54+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"When an object is revolving in a circular orbit, its velocity at any point is directed tangentially to the circle at that point. 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