Whakamātautau Waku Pūmau me te Waku Kinetic

Ngā Tohutohu Whakamātautau Waku Pūmau me te Waku Kinetic

Kaupapa whakamātautau: Te waku pumau me te waku nekeneke

Ngā whāinga o te whakamātautau:

– Te mōhio ki te kaha waku pumau

– Te mōhio ki te kaha waku nekeneke

Ngā taputapu me ngā rauemi: Dynamometer, kurupae iti.

Ariā taketake:

Te Kaha o te Waku

Ko te waku te kaha ātete e pā ana ki waenganui i ngā mata o ngā mea e pā ana. I roto i tēnei kaupapa, e pā ana te waku e akohia ana ki te kaha waku e pā ana ki waenganui i ngā mata totoka e rua e pā ana.

Kei te taha ke tonu te kaha waku i runga i tētahi mea e neke ana i te ahunga o te nekehanga o taua mea.

E rua ngā momo kaha waku, arā, te kaha waku pumau (f_s) me te kaha waku nekeneke (f_kKa mahi te waku pumau ina kore te mea e neke, ko te waku nekeneke ia ka mahi ina neke te mea. Ki te panaia e koe te tēpu engari kāore te tēpu e neke, ko te kaha waku e pā ana ki te tēpu pumau he waku pumau. I tetahi atu taha, ina neke te tēpu, ko te kaha waku e pā ana ki te tēpu he waku nekeneke.

Te Kaha Waku Pūmau

Ko te waku pumau te kaha waku e pā ana ki ngā mata o ngā mea e pā ana tetahi ki tetahi i te wā kāore ngā mea e neke ana.

f_s = μ_s N

E ai ki te Ture Tuatahi a Newton, kei te okioki tetahi mea mēnā he ōrite te kaha katoa (te kaha hua) ki te kore.

ΣF_x = 0

F – f_s = 0

F = f_s

Ina tata te neke o tētahi mea (kei te tū tonu te mea), ka rite te kaha waku pūmau mōrahi ki te kaha pana, ki te kaha kume rānei.

Te Kaha Waku Kinetic

Ko te waku nekeneke te kaha waku e pā ana ki ngā mata o ngā mea e pā ana tetahi ki tetahi i te wā e neke ana ngā mea.

f_k = μ_k N

E ai ki te Ture Tuatahi a Newton, ka neke te mea i te tere pumau mēnā he ōrite te kaha katoa (te kaha hua) ki te kore.

F – f_k = 0

F = f_k

Ina neke tetahi mea i te tere pumau, he rite te rahi o te kaha waku nekeneke ki te rahi o te kaha pana, te kaha kukume rānei.

Ngā taahiraa whakamātautau:

1. Whakatakotoria te poraka ki runga i tētahi mata papatahi.

2. Honoa te dynamometer ki te poraka

3. Tōia te dynamometer kia tata rā anō te poraka ki te neke.

4. Pānuihia te rahi o te kaha e tohuhia ana e te dynamometer, tuhia ki te pou kaha waku pumau.

5. Tōia te dynamometer kia neke te poraka i te tere pumau.an

6. Pānuihia te rahi o te kaha e tohuhia ana e te dynamometer, tuhia ki te pou kaha waku nekeneke.

7. Whakahoutia te whakamātautau kia 3 ngā wā

Raraunga me te Tātari Raraunga:

No	Te kaha waku pumau (fs)	Te kaha waku nekeneke (fk)
1
2
3
Toharite

Whakautuhia ngā pātai e whai ake nei:

Ko tēhea te mea nui ake, te waku tūmau, te waku nekeneke rānei? He aha ai?

Whakamutunga

Whakapuakina tō whakatau.