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共点力的平衡

> 如图所示，小张同学左手抓起一篮球，手臂处于水平状态，当篮球与手臂都静止时，下列说法正确的是 A．手对篮球的作用力等于篮球的重力 B．手对篮球的作用力大于篮球的重力 C．手对篮球的作用力大于篮球对手的作用力 D．手对篮球的摩擦一定等于篮球的重力

问题：

发布时间：2024-09-12

如图所示，小张同学左手抓起一篮球，手臂处于水平状态，当篮球与手臂都静止时，下列说法正确的是

A．手对篮球的作用力等于篮球的重力

B．手对篮球的作用力大于篮球的重力

C．手对篮球的作用力大于篮球对手的作用力

D．手对篮球的摩擦一定等于篮球的重力

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