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Junior High
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第27題 最大靜摩擦力和垂直正向力有什麼關係嗎..？
(
)27.在水平桌面上木塊的上方加砝碼,測得最大靜摩擦
力f之數據如下表,已知每個砝碼重100gw,則木
塊為多少gw?
重量
f
木塊+1個砝碼
60 gw
木塊+2個砝碼
80 gw
(A) 100
(B) 150
(C) 200
(D) 250
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