Question

In a tug-of-war contest, Team A has 7 players, with an average mass of 65.1 kg and Team B has 8 players with an average mass of 58.9 kg. Team A pulls with a force of 4.1 kN to dislodge Team B, and can then pull them at a constant velocity using 3.6 kN. Determine the static and kinetic coefficients of friction for Team B. 

Answer 1

$F=\mu_s N\to 4100=\mu_s\cdot8\cdot58.9\cdot9.8$

$\mu_s=4100/4617.76=0.89$ .Answer

$3600=\mu_k\cdot 8\cdot58.9\cdot9.8$

$\mu_k=3600/4617.76=0.78$ .Answer