某人重800牛頓，電梯內的地板上有一磅秤，該人站立在磅秤上。如果電梯由靜止以9 米/秒2之加速度下降，則磅秤所指示該人的視重為多少牛頓？（ g = 8 m/s2)(A)400 (B)80

問題詳情

20.某人重800牛頓，電梯內的地板上有一磅秤，該人站立在磅秤上。如果電梯由靜止以4.9 米/秒2之加速度下降，則磅秤所指示該人的視重為多少牛頓？（ g = 9.8 m/s2)
(A)400
(B)800
(C)1000
(D)1200
(E)1600

參考答案

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