Cart B, which weighs 75 kN, rolls along a sloping track that forms an angle b with the horizontal. The spring constant is 5 kN/m, and the spring is unstretched when x = 0. Determine the distance x...

Cart B, which weighs 75 kN, rolls along a sloping track that forms an angle b with the horizontal. The spring constant is 5 kN/m, and the spring is unstretched when x = 0. Determine the distance x corresponding to equilibrium for the angle b indicated.

Angle b = 30