地球有重力吗 什么是地球重力？
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\u91cd\u529b\u52a0\u901f\u5ea6\u7684\u5355\u4f4d\u4e5f\u5e94\u5f53\u662f"N.S" \u725b\u987fN(kg.m/s)\u4f8b\u5982\u4ee5\u6d77\u5e73\u9762\u8ba1\u7b97\uff0c\u5728\u5730\u7403\u8d64\u9053\u7684\u91cd\u529b\u52a0\u901f\u5ea6\u6570\u503c\u4e3a 9.78033 N.S2\uff0c\u5728\u5317\u6781\u5219\u7ea6\u4e3a9.83N.S2 \u3002\uff08\u7531\u4e8e\u5730\u7403\u81ea\u8f6c\u6240\u4ea7\u751f\u7684\u79bb\u5fc3\u529b\u6240\u5f71\u54cd\uff0c\u4e00\u822c\u6765\u8bf4\u5728\u540c\u4e00\u6d77\u62d4\u9ad8\u5ea6\u4e0b\uff0c\u4f4d\u4e8e\u8d64\u9053\u7684\u91cd\u529b\u52a0\u901f\u5ea6\u6700\u5c0f\uff0c\u800c\u5904\u4e8e\u4e24\u6781\u7684\u91cd\u529b\u52a0\u901f\u5ea6\u5219\u6700\u5927\u3002\uff09
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准确地说地球有引力，引力（The gravity of the earth）是质量的固有本质之一，每一个物体必然与另一个物体互相吸引。而物体由于地球的吸引而受到的力叫重力（Gravity），重力的施力物体是地球。
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