Ngā raruraru kua whakatauhia i roto i ngā ture nekehanga a Newton – Te kaha noa
1. He mea e takoto ana i runga i tētahi tēpu, e whakaaturia ana i te pikitia i raro nei. Ko te papatipu o te mea he 1 kg. Ko te whakaterenga o te kaha ā-papa he 9.8 m/s 2. Tātaihia te kaha noa i pā ki te mea e te tēpu.
Mōhiotia:
Taumaha (m) = 1 kg
Te whakaterenga o te kaha ā-papa (g) = 9.8 m/s 2
Taumaha (w) = mg = (1 kg)(9.8 m/s² ) = 9.8 kg m/s² = 9.8 Newton
E hiahiatia ana: te kaha noa (N)
Rongoā:
Kei runga i te tēpu te mea e takoto ana, nō reira ko te kaha kupenga i runga i te mea he kore (te ture tuatahi, tuarua rānei a Newton). Ka mahi poutū te taumaha o te mea ki raro, ki waenganui o te Ao. Me whai kaha anō ki runga i te mea hei taurite i te kaha ā-papa . Kei runga i te tēpu te mea e takoto ana, kia puta ai tēnei kaha ki runga. Ko te kaha e puta ana i te tēpu ka kiia he kaha noa (N). Ko te tikanga o te noa he poutū.
Kōwhiria te ahunga whakarunga hei ahunga-y pai. Ko te kaha kupenga i runga i te mea ko:
∑ Fy = 0
N – w = 0
N = w
N = mg
N = 9.8 Niutona
Ko te kaha noa e pā ana ki te mea e whakamahia ana e te tēpu he 9.8 N ki runga.
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2. E rua ngā mea e takoto ana i runga i tētahi tēpu. Te taumaha o te mea 1 (m1 ) = 1 kg, te taumaha o te mea 2 (m2 ) = 2 kg, te whakaterenga nā te kaha ā-papa (g) = 9.8 m/s2 . Tātaihia te rahi me te ahunga o te kaha noa e pā ana ki te m2 ki te m1 me te kaha noa e pā ana ki te tēpu ki te m2.
otinga
Mōhiotia:
Taumaha o te mea 1 (m1 ) = 1 kg
Taumaha o te mea 2 (m2 ) = 2 kg
Te whakaterenga o te kaha ā-papa (g) = 9.8 m/s 2
Taumaha o te mea 1 (w1 ) = m1 karamu = (1)(9.8 m/s2 ) = 9.8 kg m/s2 = 9.8 Newtons
Taumaha o te mea 2 (w 2 ) = m 2 karamu = (2)(9.8 m/s 2 ) = 19.6 kg m/s 2 = 19.6 Newtons
E hiahiatia ana: N 1 me N 2
Rongoā:
(a) Te kaha noa i tukuna e m 2 ki te m 1 (N 1 )
N 1 = w 1 = 9.8 Newton
Kei runga te ahunga o N 1 .
(b) Te kaha noa i tukuna e te tēpu ki runga i te m 2 (N 2 )
N 2 = w 1 + w 2 = 9.8 Ngā Newton + 19.6 Ngā Newton = 29.4 Ngā Newton
Kei runga te ahunga o N 2 .
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3. He mea e takoto ana i runga i te tēpu. Ko te taumaha o te mea he 2 kg, ko te whakaterenga nā te kaha ā-papa he 9.8 m/s² . Ko te rahi o te kaha F he 10 Newtons. Kimihia te rahi me te ahunga o te kaha noa e tukuna ana e te tēpu ki runga i te mea.
otinga
Mōhiotia:
Taumaha o te mea (m) = 2 kg
Te whakaterenga nā te kaha ā-papa (g) = 9.8 m/s 2
Taumaha (w) = mg = (2 kg)(9.8 m/s² ) = 19.6 kg m/s² = 19.6 Newton
Te Kaha F (F) = 10 Newton
E hiahiatia ana : te rahi me te ahunga o te kaha noa (N)
Rongoā:
ko te ahunga o te kaha noa kei runga.
Te rahi o te kaha noa:
∑ F = 0
N – F – w = 0
N = F + w
N = 10 Ngā Newton + 20 Ngā Newton
N = 30 Niutona
[irp]
4. He mea e takoto ana i runga i te tēpu. Ko te papatipu o te mea he 1 kg, ko te whakaterenga nā te kaha ā-papa he 9,8 m/s² , ko te kaha F1 he 10 N, ā, ko te kaha F2 he 20 N. Tātaihia te rahi me te ahunga o te kaha noa e pā ana ki te tēpu ki te mea. g = 9.8 m/ s²
otinga
Mōhiotia:
Taumaha (m) = 1 kg
Te whakaterenga o te kaha ā-papa (g) = 9.8 m/s 2
Taumaha (w) = mg = (1 kg)(9.8 m/s² ) = 9.8 kg m/s² = 9.8 Newton
F 1 = 10 Newton
F 2 = 20 Newton
E hiahiatia ana: te rahi me te ahunga o te kaha noa (N)
Rongoā:
Ko te ahunga o te kaha noa kei runga.
Te rahi o te kaha noa:
∑ F = 0
N – F 2 – w + F 1 = 0
N = F2 + w – F1
N = 20 Ngā Niutoni + 9.8 Ngā Niutoni – 10 Ngā Niutoni
N = 19.8 Niutona
[irp]
5. Papatipu o te mea (m) = 2 kg, whakaterenga o te kaha ā-papa (g) = 9.8 m/s² , koki = 30 ° . Kimihia te rahi me te ahunga o te kaha noa i pā ki te mea.
Rongoā:
Ko w te taumaha, ko wx te wāhanga whakapae o te taumaha, ko wy te wāhanga poutū o te taumaha, ko N te kaha noa.
Mōhiotia:
papatipu (m) = 2 kg
te whakaterenga o te kaha ā-papa (g) = 9.8 m/s 2
taumaha (w) = mg = (2 kg)(9.8 m/s² ) = 19.6 kg m/s² = 19.6 Newton
w x = w sin 60 o = (19.6 N)(0.5) √ 3 = 9.8 √ 3 Ngā Newton
w y = w cos 60 = (19.6 N)(0.5) = 9.8 Newton
E hiahiatia ana: te kaha noa (N)
Rongoā:
∑ F = 0
N – w y = 0
N = w y
N = 9.8 Niutona
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- Papatipu me te taumaha
- Te kaha noa
- Te ture tuarua o te nekehanga a Newton
- Te kaha waku
- Te nekehanga i runga i te mata whakapae me te kore he kaha waku
- Te nekehanga o ngā tinana e rua me te tere tere ōrite i runga i te mata whakapae taratara me te kaha waku
- Te nekehanga i runga i te papa whakarara me te kore he kaha waku
- Te nekehanga i runga i te papa whakarara taratara me te kaha waku
- Te nekehanga i roto i te ararewa
- Ka honoa te nekehanga o ngā tinana e ngā taura me ngā pūrere
- E rua ngā tinana he rite te rahi o te whakaterenga
- Te whakaawhiwhi i tētahi piko papatahi – ngā nekehanga porowhita
- Te whakaawhiwhi i tētahi kōpiko peeke – ngā hihiri o te nekehanga porowhita
- Te nekehanga ōrite i roto i te porowhita whakapae
- Te kaha pokapū i roto i te nekehanga porowhita ōrite
