A rope goes over a circular pulley with a radius of 6.3 cm. If the pulley makes four revolutions without the rope slipping, what length of rope passes over the pulley?

how can i find distance if the only variable given is radius and revolutions?

1 answer

Arc length = radius * angle (in radians)

In this case, arc length equals length of rope, so

L = r*θ = 6.3*4(2π)

Can you take it from here?