Correct Answer: Speed and the magnitude of the net force are constant.<\/strong><\/p>\n\n\n\n Uniform circular motion refers to the motion of an object traveling in a circular path at a constant speed<\/strong>. Although the speed remains the same, the direction of motion continuously changes<\/strong> due to the circular path. This change in direction causes a change in velocity<\/strong> and requires a net force<\/strong>, called the centripetal force<\/strong>, to keep the object moving in a circle.<\/p>\n\n\n\n Let\u2019s break down the quantities mentioned:<\/p>\n\n\n\n Summary:<\/strong><\/p>\n\n\n\n In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, centripetal acceleration, the magnitude of the net force? The Correct Answer and Explanation is: Correct Answer: Speed and the magnitude of the net force are constant. Explanation (300+ words): Uniform circular motion refers to the motion of an object traveling in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-217673","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/217673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=217673"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/217673\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=217673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=217673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=217673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\nExplanation (300+ words):<\/h3>\n\n\n\n
\n
Speed is a scalar quantity that measures how fast an object is moving, regardless of direction. In uniform circular motion, the magnitude<\/strong> of velocity (i.e., speed) remains unchanged throughout the motion. So speed is constant<\/strong>.<\/li>\n\n\n\n
Velocity is a vector quantity<\/strong>, meaning it has both magnitude and direction. While the speed (magnitude of velocity) is constant, the direction of velocity is continuously changing<\/strong> because the object is always turning. Therefore, instantaneous velocity is not constant<\/strong>.<\/li>\n\n\n\n
Centripetal acceleration always points toward the center of the circle and is responsible for changing the direction of the velocity. Its magnitude<\/strong> is given by $a_c = \\frac{v^2}{r}$, where $v$ is the constant speed and $r$ is the radius of the circle. Because both $v$ and $r$ are constant in uniform circular motion, the magnitude of centripetal acceleration is constant<\/strong>, but its direction changes constantly<\/strong>, following the direction toward the center at each point on the path.<\/li>\n\n\n\n
The net force required to keep the object in circular motion is the centripetal force<\/strong>, which has a constant magnitude given by $F = \\frac{mv^2}{r}$. Since both $m$ and $v$ are constant, and the radius $r$ doesn\u2019t change, the magnitude of the net force is constant<\/strong>. However, like acceleration, the direction of the net force also changes continuously<\/strong>, always pointing toward the center.<\/li>\n<\/ol>\n\n\n\n
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