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class="pointer">高中物理</a> <span>/</span> <a href="javascript:;"></a> </div> <div id="5aep2vp" class="m-wrap g-cw cfx"> <div id="pktspgy" class="w fl"> <div id="xlesprd" class="g-mn2"> <ul id="J_question_detail" > <li> <div id="eslyog0" class="question-block"> <div id="qe3q6ht" class="q-mc"> <h1 class="q-tit"> 1. <a href="/paper/view-5141883.shtml" class="ques-origin a-pointer" target="_blank"> (2023高二上·海門期末) </a> 某同學(xué)用單擺測定當?shù)氐闹亓铀俣取? </h1> <ol class="q-bd-list"> <li> <div id="uadzh1i" class="question-block"> <div id="q32vwua" class="q-mc"> <div id="bnybq0k" class="q-tit"> （1）他在組裝單擺時，在擺線上端的懸點處，采用了甲乙兩種方式，正確的方式是<span id="6slxljc" class="filling" ></span>（填“甲”或“乙”）； <p align="left"><img width="322" height="126" src="http://tikupic.21cnjy.com/2023/02/07/20/f7/20f71b6dd203762a61f1af3b0d91f300_369x144.png" style="max-width:100%;"></p> </div> </div> </div> <li> <li> <div id="6rl2mmu" class="question-block"> <div id="xa2oof4" class="q-mc"> <div id="igwcz7p" class="q-tit"> （2）該同學(xué)組裝好單擺后在擺球自然懸垂的情況下，用毫米刻度尺從懸點量到擺球的最低端的長度為l，再用游標卡尺測量擺球直徑，結(jié)果如圖丙所示，則該擺球的直徑d為<span id="yvwcvu1" class="filling" ></span>mm，單擺擺長L=<span id="074tppi" class="filling" ></span>（用l、d表示）。 <p align="left"><img width="427" height="152" src="http://tikupic.21cnjy.com/2023/02/07/e4/e5/e4e55975d22a0492b980ed84acbb1603_518x185.png" style="max-width:100%;"></p> </div> </div> </div> <li> <li> <div id="if076pp" class="question-block"> <div id="bzs3e0r" class="q-mc"> <div id="u24g5ih" class="q-tit"> （3）該同學(xué)通過多次實驗得出數(shù)據(jù)畫出擺長L和周期T<sup>2</sup>圖像，如圖，請根據(jù)圖像求出重力加速度的值<span id="h2b9ep6" class="filling" ></span>m/s<sup>2</sup>。（已知π<sup>2</sup>≈9.86，結(jié)果保留三位有效數(shù)字） <p align="left"> <img width="320" height="183" src="http://tikupic.21cnjy.com/2023/02/07/9f/fd/9ffd6b659ad70717b7e2fc64ae6511b0_367x210.png" style="max-width:100%;"></p> </div> </div> </div> <li> <li> <div id="sg0i8g7" class="question-block"> <div id="tqp42mz" class="q-mc"> <div id="6fsqvew" class="q-tit"> （4）如果測得的g值偏大，可能的原因是_____（填序號）。 </div> <div id="evcjwqy" class="exam-s"> <span id="rldbhz8" class="op-item"><span id="ml1xt35" class="op-item-nut">A . </span><span id="g9k3umu" class="op-item-meat">計算擺長時用擺線長度</span></span> <span id="zgqjnqp" class="op-item"><span id="2xz69rf" class="op-item-nut">B . </span><span id="3sdlacl" class="op-item-meat">開始計時時，停表沒有及時按下</span></span> <span id="l8ou71n" class="op-item"><span id="zlwvcvb" class="op-item-nut">C . </span><span id="si2a6m8" class="op-item-meat">擺線上端未牢固系于懸點，振動中出現(xiàn)松動，使擺線長度增加</span></span> <span id="jh1e49l" class="op-item"><span id="5hxrwee" class="op-item-nut">D . </span><span id="8przhpx" class="op-item-meat">實驗中誤將30次全振動記為31次</span></span> </div> </div> </div> <li> </ol> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="hf27pp0" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="o1o4g8g" class="g-sd2">  <div style="background:#fff;padding:20px 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