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<div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/d7C8/d5a86c77e855d4e7b2b1e17d297f064ff5f29b67" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/d7C8/d5a86c77e855d4e7b2b1e17d297f064ff5f29b67" data-origin-width="947" data-origin-height="799"></div><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/d7C8/0c64a0d5bce257d7cc00583701b19cf36ef9f08c" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/d7C8/0c64a0d5bce257d7cc00583701b19cf36ef9f08c" data-origin-width="1024" data-origin-height="1365"></div><p style="text-align: left;">이 문제에서 스프링에 작용하는 힘을 구하려면 보의 강성도 l에 2l을 넣어줘야 하나요?</p>
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