如图所示，用定滑轮和动滑轮分别将质量相同的甲、乙两物体匀速提升相同的高度，不计绳重与摩擦，且动滑轮重小于物重，使用甲图滑轮最大的优点是_1；所用的拉力F甲_2F乙(选填“>”、“<”或“=_刷题宝

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如图所示，用定滑轮和动滑轮分别将质量相同的甲、乙两物体匀速提升相同的高度，不计绳重与摩擦，且动滑轮重小于物重，使用甲图滑轮最大的优点是____ ；所用的拉力F_甲____ F_乙(选填“>”、“<”或“=”)。

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可以改变施力的方向,>

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