a disk of a radius 50 cm rotates at a constant rate of 100 rpm. what distance in meters will a point on the outside rim travel during 30 sec

Question

a disk of a radius 50 cm rotates at a constant rate of 100 rpm. what distance in meters will a point on the outside rim travel during 30 seconds of rotation?​

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Ngọc Diệp 5 years 2021-09-02T10:44:54+00:00 1 Answers 7 views 0

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  1. Ladonna
    0
    2021-09-02T10:46:51+00:00
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    Answer: 50π m ≈ 157 m

    Explanation:

    100 rev/min (2π rad/rev) / (60 sec/min) = 3⅓π rad/s

    d = ωrt = 3⅓π(0.50)(30) = 50π m ≈ 157 m

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