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Kotrljanje


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КОТРЉАЊЕ

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Котрљање је сложено кретање које може да се анализира као резултат слагања два кретања:

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- транслаторно кретање тела

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- ротационо око осе

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Тело може да се креће по подлози са клизањем и без клизања. Разматраћемо котрљање без клизања.

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Приликом котрљања без клизања брзине свих додирних тачака тела и подлоге су исте.

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Значи, у случају котрљања без клизања тренутна брзина оне тачке која додирује подлогу (тачка О) једнака је брзини подлоге. При котрљању без клизања брзина додирних тачака је једнака нули.

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Пример: Брзина тачке O је нула (подлога је непокретна)

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Пример: тачка М

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Jan 24
Jelena Popovic
Jelena Popovic (Jan 24 2021 10:27AM) : Клизање и котрљање - сила трења more

https://www.youtube.com/watch?v=ofWZqdx0mAk

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Једнаке брзине додирних тачака – тангенцијална убрзања додирних тачака тела и подлоге.

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DMU Timestamp: November 12, 2020 20:50

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Jan 24
Jelena Popovic
Jelena Popovic (Jan 24 2021 10:22AM) : ротационо кретање more

http://fizis.rs/

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