在這光滑的地面磨擦

Quiz
•
English
•
8th Grade
•
Hard

王 大智
Used 2+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如右圖,將 4 kg 的物體放在水平的地板上,施以 0.5 kgw 的水平推力, 若此物體靜止不動,則物體所受的摩擦力為
0.5 kgw
3.5 kgw
4 kgw
4.5 kgw
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
有一物體重量為 13 kgw,發現物體受力後仍靜止不動,如右圖,則該物 體所受摩擦力的大小為下列何者?
2 kgw
5 kgw
13 kgw
35 kgw
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列關於摩擦力的敘述,何者正確?
接觸面積愈小則摩擦力愈小
摩擦力大小與接觸面的性質無關
物體開始運動瞬間的摩擦力最大
物體與接觸面之摩擦力愈大則愈易推動。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
現實生活中摩擦力總是如影隨形,下列哪一項應用不能減少摩擦力?
門軸添加的潤滑油
鋼珠筆的圓珠筆芯
浴室的止滑墊
直排輪軸承的滾珠
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
大華推不動書櫃,於是他先將書本全部取出,再用小片地毯墊在書櫃底下,結果可輕易推動。這個活動有關摩擦力,下列敘述何者錯誤?
下壓的力愈大,最大靜摩擦力變愈大
最大靜摩擦力的大小與接觸面的性質有關
大華剛開始 推不動書櫃,是因為當時他的水平推力小於摩擦力
推力須大於「最大靜摩擦力」才 能開始推動。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某一物體10公斤重,而作用於此物體的施力 與摩擦力關係圖,如右圖,依據此關係圖推論,若施力為 5 公斤重,則物體所受的摩擦力為若干公斤重?
3
4
5
10
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以 1 公斤重的水平作用力施於靜置在水平桌面的木塊,恰可 拉動木塊。若在此木塊上放置砝碼,如右圖,其可拉動木塊之水平施力和砝碼數的關係如右表,已知每個砝碼重 1 公斤, 依此表推算木塊的重量是多少公斤重?
3 公斤重
4 公斤重
5 公斤重
6 公斤重
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