{"id":210052,"date":"2025-04-29T17:04:32","date_gmt":"2025-04-29T17:04:32","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=210052"},"modified":"2025-04-29T17:04:34","modified_gmt":"2025-04-29T17:04:34","slug":"two-non-collinear-parallel-equal-forces-acting-in-opposite-directions-on-a-body-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/04\/29\/two-non-collinear-parallel-equal-forces-acting-in-opposite-directions-on-a-body-2\/","title":{"rendered":"Two non-collinear parallel equal forces acting in opposite directions on a body"},"content":{"rendered":"\n

Two non-collinear parallel equal forces acting in opposite directions on a body
Select one:
a. Forms concurrent forces
b. Constitute a couple.
c. Have zero effect on the body
d. Keep the body at equilibrium<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is:<\/p>\n\n\n\n

b. Constitute a couple.<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

In physics, a couple<\/strong> is defined as two equal and opposite forces that are applied to a body, but their lines of action are not collinear (i.e., they do not lie along the same straight line). This creates a rotational effect on the body without causing any translational motion. A couple always results in torque, which is the rotational equivalent of force.<\/p>\n\n\n\n

Now, let\u2019s break down the key concepts involved in this question:<\/p>\n\n\n\n

    \n
  1. Non-collinear forces:<\/strong> The forces involved in the couple are applied at different points and in opposite directions, but they are not along the same line. This means they create a turning effect rather than just pushing or pulling the object in a straight line.<\/li>\n\n\n\n
  2. Parallel equal forces:<\/strong> The forces in a couple are equal in magnitude but act in opposite directions. When these forces are parallel but non-collinear, they tend to rotate the body around an axis. The force is exerted at a distance from the axis, and the torque produced by this distance causes rotation.<\/li>\n\n\n\n
  3. Effect on the body:<\/strong> Although these two forces create rotation, they do not cause any linear motion because their effects cancel each other out in terms of translation. The body does not accelerate in any direction, but it may rotate depending on the magnitude and the distance between the forces.<\/li>\n\n\n\n
  4. Torque (Moment of Force):<\/strong> The couple generates a torque or moment. This torque is calculated as the force multiplied by the perpendicular distance between the lines of action of the forces. The torque tends to rotate the object, but it does not produce any net force to translate the object in space.<\/li>\n<\/ol>\n\n\n\n

    In contrast:<\/p>\n\n\n\n

      \n
    • Concurrent forces<\/strong> (Option a) refer to forces that act through a single point, but since the forces in the couple are non-collinear and act in opposite directions, they do not form concurrent forces.<\/li>\n\n\n\n
    • Zero effect on the body<\/strong> (Option c) is incorrect because the couple results in rotational motion, not no effect.<\/li>\n\n\n\n
    • Equilibrium<\/strong> (Option d) does not apply here, as a couple does not necessarily keep the body at rest. It creates rotation, which could keep the body in dynamic equilibrium or lead to rotation depending on the circumstances.<\/li>\n<\/ul>\n\n\n\n

      Thus, two non-collinear, parallel, and equal forces acting in opposite directions on a body constitute a couple<\/strong>, resulting in torque and causing rotational motion.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Two non-collinear parallel equal forces acting in opposite directions on a bodySelect one:a. Forms concurrent forcesb. Constitute a couple.c. Have zero effect on the bodyd. Keep the body at equilibrium The correct answer and explanation is : The correct answer is: b. Constitute a couple. Explanation: In physics, a couple is defined as two equal […]<\/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-210052","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210052","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=210052"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/210052\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=210052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=210052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=210052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}