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ዚ૛ɢኪ

3 ɢॉၾɢਅʘମΝjνڌ 2-4 הͪf

表 2-4 力矩與力偶之異同

ɢॉ ɢਅ
݄ɚࡈɽʃ޴ഃe˙Σ޴ˀdЪ͜ᇞʔίΝɓٜᇞ
݄ɓࡈɢ׵ي᜗ɪdԴ༈ي᜗ᔎɓᓃאɓൿ
່֛ ̻ٙБɢ׵ي᜗ɪdԴ༈ي᜗ପ͛ᔷਗٙඎd၈މ
ᔷਗٙඎd၈މɢॉאᔷॉf
ɢਅf
˾໮ Mmoment Ccouple
ɽʃ M = F × d C = F × d
ఊЗ N-m א kgw-m Ν̸
ɓছ৕ࣛ০˙Σ່֛މ͍dනࣛ০˙Σ່֛މ
׌ሯ Ν̸
ࠋf
1. ࿁ A ᓃ՟ɢॉd˸ M A ԸڌͪdΝଣd࿁ 1. ɢਅ̙ίՉЪ̻ࠦ͜ɪ΂จ୅ਗא୅ЇၾՉ̻Б
B ᓃ՟ɢॉۆމ M B f ̻ٙࠦɪdՉࣖ؈ɓᅵf
2. ପ͛ɢਅʘЪ͜ɢٙɽʃ̙΂จһҷdШɢਅᑑ
2. ί M=FÒddd ܸ݊ɢٙЪ͜ᇞၾᔷൿٙ
͵ᎇʘҷᜊd̥ࠅୌΥ C = F × d = F × d у̙d
1
2
2
1
ٜۧ൷ᕎd߰ d ʔλӋd͵̙ਗ਼ɢʱ༆ϓ ݂ɢၾɢਅᑑϓˀˢf
ء
F x ʿ F y dʱй࿁ᔷൿ՟ɢॉΎ̋ৎԸf 3. ɢਅٙΥϓʥމɢਅא 0fɢਅٙΥϓØ΢ɢਅ
จ ʘ˾ᅰձf
3. Ъ͜׵ي᜗ٙɢ߰ஷཀᔷൿאၾᔷൿ̻
ԫ 4. ɢਅ̻ٙፅɓ֛ࠅ͜ɢਅf͜ɢ݊ೌجၾՉ̻ፅ
Бdۆɢॉ̀މ 0f ٙf
ධ
4. Ъ͜׵ي᜗ʘɢ̙ضɢٙЪ͜ᇞ˙Σ΂จ 5. ɓɢၾɓɢਅٙΥϓމɓɢdϤɢٙɽʃၾࡡɢ
ٙɽʃ޴ഃd˙Σ͵޴ΝdШЪ͜ᓃʔΝdจу
୅ਗЗໄϾʔᅂᚤɢॉٙɽʃf
ɢਅึҷᜊɢٙЪ͜ᓃf༉νၚ፯ᇍԷ 5f
6. ್݅ɢၾɢਅٙΥϓމɢdԟჿɢک̙ʱ༆ϓɓ
ɢၾɓɢਅf༉νၚ፯ᇍԷ 6f
4 ɢॉࡡଣjϤࡡଣ̥Ϟɓ̩༑j
Υɢ࿁΂ɓᓃൿٙɢॉഃ׵ R
΢ʱɢ࿁Νɓᓃൿٙɢॉ Q
R=P+Q
ձdɦ၈މຬଣ༵֛ଣא͙ቚᚆ r R× r=P× p+Q× q
q P
ˤ֛ଣVarignon's theoremd p

νྡ 2-7 הͪfΥɢ R ࿁ A ᓃٙ
A
ɢॉഃ׵ʱɢ P ʿ Q ࿁ A ᓃɢॉ
圖 2-7 力矩原理
ٙձf

觀念活絡通數學

1. –20 + 30 = 2. –20 – 30 =

3. 6 + 4 × 2 = 4. 1 × 12 – 2 × 7 =
3
ഈ 1. 10c2. –50c3. 14c4. –10

#% @$) JOEE

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