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class="ques-origin a-pointer" target="_blank"> (2024高二下·滄州月考) </a> 如圖所示，將彈簧振子從平衡位置<em>O</em>拉下一段距離Δ<em>x</em> ，釋放后振子在<em>A</em><em>、</em><em>B</em>間振動(dòng)。設(shè)<em>AB</em>=20cm，振子由 <em>A</em>到<em>B</em> 運(yùn)動(dòng)時(shí)間為0.1s，則下列說法正確的是（　?。?p><img width="147" height="159" src="http://tikupic.21cnjy.com/2024/06/15/f2/72/f272cd5090bc66731576b2f429b51537_169x184.png" style="max-width:100%;"></p> </h1> <div id="lit8iep" class="exam-s"> <span id="hd0t7o8" class="op-item"><span id="pwm3fl8" class="op-item-nut">A . </span><span id="2rsxn6a" class="op-item-meat">振子的振幅為10 cm，周期為0.2s</span></span> <span id="z7cfxi2" class="op-item"><span id="f7lxhgs" class="op-item-nut">B . </span><span id="73y9f67" class="op-item-meat">振子在 <em>A</em><em>、</em><em>B</em>兩處受到的回復(fù)力分別為<em>k</em>Δ<em>x</em>+<em>mg</em>與<em>k</em>Δ<em>x</em>-<em>mg</em></span></span> <span id="leavyxo" class="op-item"><span id="kqh3tdr" class="op-item-nut">C . </span><span id="hghwcog" class="op-item-meat">振子在<em>A</em><em>、</em><em>B</em>兩處受到的回復(fù)力大小都是<em>k</em>Δ<em>x</em></span></span> <span id="ju3qyyb" class="op-item"><span id="y6bctam" class="op-item-nut">D . </span><span id="u65ay24" class="op-item-meat">振子完成一次全振動(dòng)通過的路程是 20cm</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="bging4t" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="a1ihisu" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=57074408" width="140px" height="140px" alt=""> <p style="text-align:center;margin-top: 10px">微信掃碼預(yù)覽、分享更方便</p> </div> <div id="0btq3ku" class="analyize-extend JV_question__papers"> <h3 class="extend-mt">使用過本題的試卷</h3> <ul class="extend-mc"> <li> <a href="/paper/view-5317235.shtml" target="_blank" title="河北省滄州市十校2023-2024學(xué)年高二下學(xué)期3月月考物理試卷" class="ex-tit"> 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