Pūtaiao

waku ~a

friction

tūingoa, tūmahi poro, tūāhua

WHAKAMĀRAMA

He tōpana e ātete ana i te nuku o tētahi mea. Me he mania te papa, he iti te waku, ā, he māmā te paheke o tētahi mea ki runga i taua papa. Me he kaitara te papa, he nui te waku, ā, he uaua te paheke o tētahi mea ki runga. Mā te mahi a te tōpana waku e huri ai te pūngao neke hei pūngao pōkākā.

A force which opposes the movement of an object. If a surface is slippery, the friction is reduced and an object slides easily on that surface. A rough surface results in greater friction making it more difficult for an object to slide along that surface. A frictional force transforms kinetic energy to heat energy.

Tauira KŌrero

Me pēhea e iti ai te waku?

Tuhia he pere hei tohu i te rahi me te ahunga o te waku e pā atu ana ki te haere o te papa retireti.

Ko te mahi a te hinu he whakaiti i te waku i roto i te pūkaha o te motukā.

WhakamĀrama Āpitihanga

He māmā te waku i waenganui i te papa retireti me te wai:

He nui te waku kei waenganui i te papanui o te tangata me te taura:

E tino whaihua ana te waku i ētahi wā. Hei tauira:

te waku kei waenganui i ngā hū o te tangata me te papa e hīkoi ana ia
te waku kei waenganui i te ringaringa o te tangata piki pari me ngā toka e kākati nei ia
te waku kei waenganui i te taea o te pahikara pōkai whenua me te ara e haere ana taua pahikara
te waku o te tumu o tētahi motukā.

He raruraru ka hua ake i te mahi a te waku i ētahi wā. Hei tauira:

te waku kei roto i tētahi pūkaha (ka tino wera mēnā he nui te waku)
te waku kei waenganui i te wai me tētahi waka, e ātete ana i te haere o taua waka.

Mā te whakamahine i te papa e haere nei tētahi mea, mā te whakamahi rango, wīra rānei, mā te hinu anō hoki e iti ai te waku. Ka kīia te hinu he hekewaku.

Takenga Mai

waku - rub, scrape, abrade

Tauira KŌrero

Me pēhea e iti ai te waku?

Tuhia he pere hei tohu i te rahi me te ahunga o te waku e pā atu ana ki te haere o te papa retireti.

Ko te mahi a te hinu he whakaiti i te waku i roto i te pūkaha o te motukā.