# Moment of inertia: Force of fish on the line; how much line unwinds?

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A cylindrical fishing reel has a moment of inertia of I = 6.81Ã ?10^-4 kg* m2 and a radius of 3.13 cm. A friction clutch in the reel exerts a restraining torque of 1.49 N*m if a fish pulls on the line. The fisherman gets a bite, and the reel begins to spin with an angular acceleration of 63.7 rad/s^2.

1) What is the force of the fish on the line?

2) How much line unwinds in 0.430 s?

https://brainmass.com/physics/torques/moment-of-inertia-force-of-fish-on-the-line-how-much-line-unwinds-11121

#### Solution Preview

You have to use the equivalent of Newton's second law for rotational dynamics in this question:

Force x arm = Torque = I(moment of Inertia) x (angular acceleration)

Here there are two sources of torque, one is the fish pulling the line by applying its force to the line [applied at ...

#### Solution Summary

With an excellent explanation, the problem is solved.

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