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একটি সরল দোলকের দৈর্ঘ্য অপরটির দ্বিগুণ । দ্বিতীয় সরল দোলকের দোলনকাল 3s হলে, প্রথমটির দোলনকাল কত?
4.24 s
4.54 s
5.0 s
কোনটিই নয়
ANSWER : 1
Descrption
<p style="margin-left:0px;">সরল দোলকের দোলনকালের সমীকরণ হল:</p><p>T = 2π * √(L / g) </p><p style="margin-left:0px;">যেখানে:</p><ul><li>T হল দোলনকাল (সেকেন্ড)</li><li>L হল কার্যকরী দৈর্ঘ্য (মিটার)</li><li>g হল অভিকর্ষজ ত্বরণ (m/s^2)</li></ul><p style="margin-left:0px;">এখানে,</p><ul><li>L_1 = 2L_2</li><li>L_2 = 1 m</li><li>g = 9.8 m/s^2</li></ul><p style="margin-left:0px;">সুতরাং,</p><p>T_1 = 2π * √(2L_2 / g) </p><p>= 2π * √(2 * 1 / 9.8) </p><p>= 4.24 s</p>
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