- #1

peasant

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## Homework Statement

A cylinder of radius

*r*metres, length

*L*and mass

*m*kg is immersed

*d*metres in the sea. It is at static equilibrium along the z-axis. Friction is not negligible. If there is an underwater current of velocity

*v*metres/sec, what is the resultant velocity of the cylinder?

When the cylinder is moving at velocity

*v_c*, I could add the velocity vectors

*v*and

*v_c*to get the resultant velocity, but I also wish to factor in the mass of the cylinder. How should I do that?

## Homework Equations

none

## The Attempt at a Solution

When the current hits the cylinder, the cylinder accelerates and frictional force increases. The cylinder then reaches terminal velocity. But what I don't get is how to calculate the force of the current on the cylinder and the frictional force .