A string is wound tightly around a wheel. When the string is pulled a distance of 40 cm in 2.50 s, the wheel turns through 5 revs.?

What is the avg speed of the string, and what is the avg angular velocity of the wheel? What is the radius of the wheel?

1 Answer

  • Θ = 5*2π = L/r →

    r = L/10π = 0.40/10π = 0.01273 m

    Vav = 0.40/t = 0.16 m/s

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