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22 July, 02:27

A stone whirled at the end of the rope 30cm long, makes 10 complete resolution in 2 seconds Find:

a. The angular velocity in radians

b. The linear speed

c. the distance covered in five seconds

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Answers (1)
  1. 22 July, 06:19
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    a. Angular speed = angular distance / time

    ω = Δθ / t

    ω = (10 rev * 2π rad/rev) / (2 s)

    ω = 31.4 rad/s

    b. Linear speed = angular speed * radius

    v = ωr

    v = (31.4 rad/s) (0.3 m)

    v = 9.42 m/s

    c. Linear distance = linear speed * time

    d = vt

    d = (9.42 m/s) (5 s)

    d = 47.1 m
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