{"id":731,"date":"2023-08-18T14:25:43","date_gmt":"2023-08-18T21:25:43","guid":{"rendered":"https:\/\/dornsife.usc.edu\/lecture-support-lab\/?page_id=731"},"modified":"2023-09-18T10:14:26","modified_gmt":"2023-09-18T17:14:26","slug":"torque","status":"publish","type":"page","link":"https:\/\/dornsife.usc.edu\/lecture-support-lab\/torque\/","title":{"rendered":"Torque"},"content":{"rendered":"\n\n\n\n        \n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--accordions \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--accordions\"\n    \n      >\n\n    \n  \n      <ul>\n              <li>\n          <button type=\"button\" class=\"accordion-trigger \" id=\"heading-1-1-h_W7aKGBOs\" aria-controls=\"section-1-1-h_W7aKGBOs\" aria-expanded=\"false\" aria-disabled=\"false\">\n                          <span class=\"item-title\">M.10(1) &#8211; Simple Lever<\/span>\n            \n                      <\/button>\n\n          <div id=\"section-1-1-h_W7aKGBOs\" role=\"region\" aria-labelledby=\"heading-1-1-h_W7aKGBOs\" class=\"accordion-panel\">\n\n                            \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <p>A metal base supports a ruler by its center allowing it to sway on its base. The ruler has two weight hangers that can be adjusted to any place on the ruler. The apparatus shows that the torque exerted by any force is equal to the force lever arm. A set of slotted weights is also provided.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-734 size-full\" src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_1.jpg\" alt=\"Simple Lever\" width=\"384\" height=\"200\" srcset=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_1.jpg 384w, https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_1-300x156.jpg 300w\" sizes=\"(max-width: 384px) 100vw, 384px\" \/><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n            \n                      <\/div>\n        <\/li>\n\n              <li>\n          <button type=\"button\" class=\"accordion-trigger \" id=\"heading-1-2-h_W7aKGBOs\" aria-controls=\"section-1-2-h_W7aKGBOs\" aria-expanded=\"false\" aria-disabled=\"false\">\n                          <span class=\"item-title\">M.10(2) &#8211; Torque Demonstrator<\/span>\n            \n                      <\/button>\n\n          <div id=\"section-1-2-h_W7aKGBOs\" role=\"region\" aria-labelledby=\"heading-1-2-h_W7aKGBOs\" class=\"accordion-panel\">\n\n                            \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <p>A stepped wheel with different weights hanging at different radii maintains its equilibrium. The wheel is held by its center and is free to rotate. From each radius, there is a light string to hold the weights. It can be used to illustrate the basic relations between force and distance.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-735 size-full\" src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_2.jpg\" alt=\"Torque Demonstrator\" width=\"127\" height=\"298\" \/><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n            \n                      <\/div>\n        <\/li>\n\n              <li>\n          <button type=\"button\" class=\"accordion-trigger \" id=\"heading-1-3-h_W7aKGBOs\" aria-controls=\"section-1-3-h_W7aKGBOs\" aria-expanded=\"false\" aria-disabled=\"false\">\n                          <span class=\"item-title\">M.10(3) &#8211; Rolling Spool<\/span>\n            \n                      <\/button>\n\n          <div id=\"section-1-3-h_W7aKGBOs\" role=\"region\" aria-labelledby=\"heading-1-3-h_W7aKGBOs\" class=\"accordion-panel\">\n\n                            \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <p>A large spool has a string wrapped around its inner drum. Place the spool on the floor or on top of the table. First let the string come out on top as you pull it. It will move in your direction. Next, turn the spool over and pull the string in the same direction. The spool will still move forward.<\/p>\n<p>Ask the students which way the spool will rotate when the spring is pulled horizontally. It may surprise them that the spool still rolls towards the demonstrator.<\/p>\n<p>Finally, it can be shown that it will continue to do so until the angle is reached where the line of action passes through the point of contact of the spool and table. The spool will slip forward if the line of action of the pull passes through the point of contact of the spool and the table.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-736 size-full\" src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_3.jpg\" alt=\"Rolling Spool\" width=\"401\" height=\"190\" srcset=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_3.jpg 401w, https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/m10_3-300x142.jpg 300w\" sizes=\"(max-width: 401px) 100vw, 401px\" \/><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n            \n                      <\/div>\n        <\/li>\n\n              <li>\n          <button type=\"button\" class=\"accordion-trigger \" id=\"heading-1-4-h_W7aKGBOs\" aria-controls=\"section-1-4-h_W7aKGBOs\" aria-expanded=\"false\" aria-disabled=\"false\">\n                          <span class=\"item-title\">M.10(4) &#8211; Robotic Arm<\/span>\n            \n                      <\/button>\n\n          <div id=\"section-1-4-h_W7aKGBOs\" role=\"region\" aria-labelledby=\"heading-1-4-h_W7aKGBOs\" class=\"accordion-panel\">\n\n                            \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <p>The robotic arm can be used to demonstrate torque in an entertaining way. It is small enough to be easily handled, but large enough to be readily seen by the entire class. The arm can rotate about three different axes and its gripper can pick up reasonably sized objects.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-732 aligncenter\" src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_015-300x203.jpg\" alt=\"Robotic Arm\" width=\"300\" height=\"203\" srcset=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_015-300x203.jpg 300w, https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_015.jpg 385w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-733 aligncenter\" src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_016-300x198.jpg\" alt=\"Robotic Arm\" width=\"300\" height=\"198\" srcset=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_016-300x198.jpg 300w, https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/clip_image002_016.jpg 401w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Click <a href=\"\/lecture-support-lab\/robotic-arm\/\">here<\/a> to see a video of the Robotic Arm demo.<\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n            \n                      <\/div>\n        <\/li>\n\n          <\/ul>\n  \n  \n\n  <\/div><\/div>\n\n\n\n  \n  \n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--two-column-ctas \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--two-column-ctas\"\n    \n      >\n\n    \n      <div class=\"group\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          Back to Mechanics\n      <\/h2>\n\n\n<\/div>\n      \n              <ul>\n                      <li>\n                  \n<div class=\"f--field f--link\">\n\n    \n    \n  \n<a \n  class=\"link\"\n  href= https:\/\/dornsife.usc.edu\/lecture-support-lab\/mechanics\/\n    aria-label=\"Read more about Mechanics\"  \n>\n    Mechanics \n  <svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 35 35\" enable-background=\"new 0 0 35 35\" width=\"25\" height=\"25\" xml:space=\"preserve\"><polygon fill-rule=\"evenodd\" clip-rule=\"evenodd\" fill=\"#000\" points=\"19.3,27.5 29.3,17.5,19.3,7.5 16.3,10.4 21.4,15.4 6.7,15.4 6.7,19.6 21.4,19.6 16.3,24.6 \"\/><\/svg>\n<\/a>\n\n\n<\/div>\n            <\/li>\n                  <\/ul>\n      \n    <\/div>\n      <div class=\"group\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          Back to Home\n      <\/h2>\n\n\n<\/div>\n      \n              <ul>\n                      <li>\n                  \n<div class=\"f--field f--link\">\n\n    \n    \n  \n<a \n  class=\"link\"\n  href= https:\/\/dornsife.usc.edu\/lecture-support-lab\/\n    aria-label=\"Read more about Home\"  \n>\n    Home \n  <svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 35 35\" enable-background=\"new 0 0 35 35\" width=\"25\" height=\"25\" xml:space=\"preserve\"><polygon fill-rule=\"evenodd\" clip-rule=\"evenodd\" fill=\"#000\" points=\"19.3,27.5 29.3,17.5,19.3,7.5 16.3,10.4 21.4,15.4 6.7,15.4 6.7,19.6 21.4,19.6 16.3,24.6 \"\/><\/svg>\n<\/a>\n\n\n<\/div>\n            <\/li>\n                  <\/ul>\n      \n    <\/div>\n  \n\n  <\/div><\/div>\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--spacer \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--spacer\"\n    \n      >\n\n    \n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":354,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-content-detail.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-731","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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