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eblox
eblox asked in Science & MathematicsMathematics · 2 years ago

Math help?

a cable runs around a winch with a radius of 4.35 cm. Determine the minimum cable length used if the winch rotates at a speed of 5 rpm and operates for 5 mins 36 sec

3 Answers

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  • Mike G
    Lv 7
    2 years ago
    Favorite Answer

    Circumference of Winch = 2π*4.35 = 8.7π cm

    Number of Rotations = 5*5.6 = 28 revs

    Minimum Length = 28*8.7π = 765.29 cm

    = 7.6529 metres

    Answer 7.7 m

  • Bryce
    Lv 7
    2 years ago

    36/60= 0.6

    2*4.35*π * 5*5.6≈ 765.3 cm

  • rotchm
    Lv 7
    2 years ago

    The winch turns 5 times per 60 seconds.

    It thus uses up 2π*r *5 in length in 60 seconds.

    Therefore it uses [left for you to find] in length in 5min36 sec=336 sec.

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