Notes on pulleys

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Notes on Pulleys

  1. Fixed Pulley

    • Imeshikiliwa kwenye sehemu moja.
    • Inabadilisha mwelekeo wa nguvu tu.
    • Faida ya Kimakanika (MA) = 1.
    • Nguvu inayohitajika = Uzito wa mzigo.

  2. Movable Pulley

    • Huenda juu na chini pamoja na mzigo.
    • Inapunguza nguvu inayohitajika kwa nusu.
    • Faida ya Kimakanika (MA) = 2.
    • Nguvu inayohitajika = (Uzito wa mzigo) / 2.

  3. Pulley System (Compound Pulley)

    • Mchanganyiko wa pulleys teté na movable.
    • Huongeza Faida ya Kimakanika (MA).
    • MA = Idadi ya kamba zinazounga mkono mzigo.
    • Nguvu inayohitajika = (Uzito wa mzigo) / MA.

  4. Faida ya Kimakanika (MA)

    • Kipimo cha jinsi mashine inavyopunguza nguvu.
    • MA = (Nguvu yaMzigo) / (Nguvu Inayotumika).

  5. Ufanisi (Efficiency)

    • Uwiano wa kazi ya matokeo (mzigo kuinuliwa) na kazi ya pembejeo (nguvu kutumika).
    • Ufanisi = (Kazi ya Matokeo / Kazi ya Pembejeo) × 100%.
    • Kwa pulleys halisi, kuna msuguano, hivyo ufanisi huwa chini ya 100%.
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