{"id":6874,"date":"2024-04-15T02:35:28","date_gmt":"2024-04-15T02:35:28","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=6874"},"modified":"2024-04-15T02:35:28","modified_gmt":"2024-04-15T02:35:28","slug":"a-seconds-pendulum-gains-2-minutes-a-day-to-make-it-to-keep-correct-time-its-length-a-must-be-decreased-b-must-be-increased-c-is-not-changed-but-weight-of-the-bob-is-increased-d-is-not-changed","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/a-seconds-pendulum-gains-2-minutes-a-day-to-make-it-to-keep-correct-time-its-length-a-must-be-decreased-b-must-be-increased-c-is-not-changed-but-weight-of-the-bob-is-increased-d-is-not-changed\/","title":{"rendered":"A Second&#8217;s pendulum gains 2 minutes a day. To make it to keep correct time its length A. Must be decreased B. Must be increased C. Is not changed but weight of the bob is increased D. Is not changed but weight of the bob is decreased"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6ab32c0321813\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Must be decreased                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Must be increased                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Is not changed but weight of the bob is increased                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Is not changed but weight of the bob is decreased                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is A. Must be decreased.<\/p>\n<p>A second&#8217;s pendulum is a simple pendulum that swings from its rest position to its maximum displacement and back again in exactly two seconds. The period of a pendulum is given by the formula $T = 2\\pi\\sqrt{\\frac{L}{g}}$, where $L$ is the length of the pendulum and $g$ is the acceleration due to gravity.<\/p>\n<p>If a second&#8217;s pendulum gains 2 minutes a day, then it is swinging too quickly. This means that the length of the pendulum is too long. To make the pendulum swing more slowly, we need to decrease its length. This will cause the period of the pendulum to increase, and the pendulum <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> will therefore gain less time each day.<\/p>\n<p>Option B is incorrect because increasing the length of the pendulum will cause it to swing more quickly, which will make it gain more time each day. Option C is incorrect because the weight of the bob does not affect the period of the pendulum. Option D is incorrect because decreasing the weight of the bob will also cause the pendulum to swing more quickly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[645],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A Second&#039;s pendulum gains 2 minutes a day. To make it to keep correct time its length A. Must be decreased B. Must be increased C. Is not changed but weight of the bob is increased D. 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