You have a mass of 69 kg and are on a 57-degree slope hanging on to a cord with a breaking strength of 135 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire?

Answer 1

tension=mg*sinTheta+mg*mu*cosTheta
solve for mu
135=69g*sin57 + 69g*cos57*mu
solvefor mu