“力的三要素”知识精讲，只用看这个，轻松考满分！更多学习方法哪里看？"

本文《“力的三要素”知识精讲，只用看这个，轻松考满分！》是傻大方资讯网小编整理于开放的互联网，版权归原作者所有。

来源：物理大师（ID：physicsmaster）

<p style = "font-size:18px">太极拳以柔克刚，四两拨千斤。</p></p><p style = "font-size:18px"><p style = "font-size:18px"><br /><br />足球运动员脚法鬼斧神工，踢出的球弧线诡异。巨大的客机可以翱翔在天空中。让我们来解读一下这些奇妙的生活现象背后的力学原理。</p></p><p style = "font-size:18px">--------->></p><p style = "font-size:18px">力的三要素</p><p style = "font-size:18px"><<---------</p><p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfp2HBR7FicM19icNxS7JTFRQudO5VO5HeziaeYnk2nVGNibFynmDQ2FCvzA/640?wx_fmt=jpeg" /><br /></p><p style = "font-size:18px"><br /><br /><p style = "font-size:18px">物理学中，力的大小、方向、作用点叫做力的三要素。只要改变其中的某一元素，力的作用效果就会发生变化。</p></p><p style = "font-size:18px"><strong><p style = "font-size:18px">1力的示意图</p></strong></p><p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfszs9BHxk3IKLcqZpsjGclSibibqia2frP9E5mZr3C6ndoiaxfBQqzsU0VQ/640?wx_fmt=jpeg" /><br /></p><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_png/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfWwS5sU7Nw4bxbKRhA9S3zeLEjBSHWl1xtM6qL5MRP1Bed2j2rroakg/640?wx_fmt=png" /><br />用一条带箭头的线段表示力。箭头方向指向力的方向，线段的起点或终点表示力的作用点。在同一图中，力越大，线段应该越长。用数值和单位标出力的大小。<p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfbI792XRIZGNAhMPjI8VhvWh7TfibXoTAV1upbTvGaz3JZKf5N8K3FXQ/640?wx_fmt=jpeg" /><br /></p><p style = "font-size:18px"><br /><br /><p style = "font-size:18px">如图表示这个物体受到了斜向上大小为10N的拉力。</p></p><p style = "font-size:18px"><strong><p style = "font-size:18px">2力的图示</p></strong></p><p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfK3FdwU0ZySkkT2wJT48iaib5NJ4IjWsCOWUabiajx49DPiaj07q9dxwjcg/640?wx_fmt=jpeg" /><br /></p><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_png/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfWwS5sU7Nw4bxbKRhA9S3zeLEjBSHWl1xtM6qL5MRP1Bed2j2rroakg/640?wx_fmt=png" /><br />力的图示和力的示意图很像。但是需要注明标度即每段线段代表的力的大小。画图时，线段和力的大小都必须是标度的整数倍。<p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" src="http://img5.shadafang.com/img.php?http://mmbiz.qpic.cn/mmbiz_jpg/RAcPJIXQy1zmvwWoqMNu3fLlejXoDnBfgArI2ydtnKIM0q8kZRCgLqpYiab6YfBrTxN67sM2uJgj1PIsN5lapbw/640?wx_fmt=jpeg" /><br /></p><p style = "font-size:18px"><br /><br /><p style = "font-size:18px">如图表示这个物体受到了水平向右的8N的拉力。标度代表，每一小段表示2N的力。</p></p><p style = "font-size:18px"><p style = "font-size:18px"></p></p><p style = "font-size:18px"><p style = "font-size:18px">更多学习方法哪里看？</p></p><p style = "font-size:18px"><p style = "font-size:18px">让上学君带你一起回顾吧~</p></p><p style = "font-size:18px"><p style = "font-size:18px">▼</p></p><p style = "font-size:18px"><strong><p style = "font-size:18px">断层式努力，让你的成绩总是上不去</p></strong></p><p style = "font-size:18px"><strong><p style = "font-size:18px"></p></strong></p><p style = "font-size:18px"><strong><p style = "font-size:18px">决定你高考命运的100个细节！</p></strong></p><p style = "font-size:18px"><strong><p style = "font-size:18px">2017年这几所985大学竟出现“断档”！2018届考生低分就能上！</p></strong></p><p style = "font-size:18px"><br /><br /></p><p style = "font-size:18px">广告</p><p style = "font-size:18px"><img alt="“力的三要素”知识精讲，只用看这个，轻松考满分！" onload="javascript:ImgReSize(this)" class="imgcenter" 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