一个球形物体O静止放在水平面地面上,并与竖直墙面相接触,AB两点是球与墙和地面的接触点,则为什么物体受二个力,重力和B点的支持力?为什么物体没有受到弹力呢
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![一个球形物体O静止放在水平面地面上,并与竖直墙面相接触,AB两点是球与墙和地面的接触点,则为什么物体受二个力,重力和B点的支持力?为什么物体没有受到弹力呢](/uploads/image/z/14548702-22-2.jpg?t=%E4%B8%80%E4%B8%AA%E7%90%83%E5%BD%A2%E7%89%A9%E4%BD%93O%E9%9D%99%E6%AD%A2%E6%94%BE%E5%9C%A8%E6%B0%B4%E5%B9%B3%E9%9D%A2%E5%9C%B0%E9%9D%A2%E4%B8%8A%2C%E5%B9%B6%E4%B8%8E%E7%AB%96%E7%9B%B4%E5%A2%99%E9%9D%A2%E7%9B%B8%E6%8E%A5%E8%A7%A6%2CAB%E4%B8%A4%E7%82%B9%E6%98%AF%E7%90%83%E4%B8%8E%E5%A2%99%E5%92%8C%E5%9C%B0%E9%9D%A2%E7%9A%84%E6%8E%A5%E8%A7%A6%E7%82%B9%2C%E5%88%99%E4%B8%BA%E4%BB%80%E4%B9%88%E7%89%A9%E4%BD%93%E5%8F%97%E4%BA%8C%E4%B8%AA%E5%8A%9B%2C%E9%87%8D%E5%8A%9B%E5%92%8CB%E7%82%B9%E7%9A%84%E6%94%AF%E6%8C%81%E5%8A%9B%3F%E4%B8%BA%E4%BB%80%E4%B9%88%E7%89%A9%E4%BD%93%E6%B2%A1%E6%9C%89%E5%8F%97%E5%88%B0%E5%BC%B9%E5%8A%9B%E5%91%A2)
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