我爱上尚雯婕008
幼苗
共回答了18个问题采纳率:94.4% 举报
A plane is flying in a straight line,(飞机沿直线飞行) climbing steadily at a speed of 6m/s (以6米每秒的速度在静止的空气中爬升)through still air. The net force acting on a passenger on mass M in the plane is?(质量为M的乘客在飞机里受到的支持力是?)
注意,文中有steadily即任何时刻看成平衡状态,所以对人只有二力平衡,所以答案为Mg
1年前
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