A 2.0 kg breadbox on a frictionless incline of angle θ=40° is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 133 N/kg as shown in the figure below. The box is released from rest when the spring is unstretched. Assume that the pulley is massless and frictionless. How far down the incline (in meters) from its point of release does the box slide before momentarily stopping (kinetic energy = zero at this point). Use g = 10 N/kg.

A 2.0 kg breadbox on a frictionless incline of angle θ=40° is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 133 N/kg as shown in the figure below. The box is released from rest when the spring is unstretched. Assume that the pulley is massless and frictionless. How far down the incline (in meters) from its point of release does the box slide before momentarily stopping (kinetic energy = zero at this point). Use g = 10 N/kg.