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重力

> 在利用弹簧测力计测量一个物体的重力时，下列说法正确的是（　　） A．弹簧测力计对物体的拉力从本质上是由电磁力引起的 B．物体对弹簧测力计的拉力是由于弹簧的形变产生的 C．物体的重力与弹簧的长度成正比 D．弹簧测力计对物体的拉力就是物体的重力

问题：

发布时间：2024-09-12

在利用弹簧测力计测量一个物体的重力时，下列说法正确的是（　　）

A．弹簧测力计对物体的拉力从本质上是由电磁力引起的

B．物体对弹簧测力计的拉力是由于弹簧的形变产生的

C．物体的重力与弹簧的长度成正比

D．弹簧测力计对物体的拉力就是物体的重力

参考答案：

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