1. The problem statement, all variables and given/known data I am working with a problem of damped harmonic motion. I am given that the motion is in a medium that exerts a force of 2N when the speed is 4 cm/s. The mass is 5kg. 2. Relevant equations C = F/v 3. The attempt at a solution I thought that the viscous damping constant was given by: C = F/v = (2N)/(.04m/s) = 50 But the book used C = (F*g)/v = 490 What is force times acceleration? It's not the mass, that's for sure. Is the book off here or am I?