Due Date: Period UNIT 5 ENERGY: WS 6 Spring Forces and Energy 1. A spring has a force constant k = 200 N/m. A 5 kg object is suspended motionless from the spring. a. Draw force diagram b. Find the forces acting on the object c. Find the extension of the spring from its equilibrium position. 2. A 2 kg box rests on a frictionless incline of angle 30 degrees supported by a spring. The spring stretches by 3 cm. a. Find the force constant of the spring. (327) b. If the box is pulled down the incline 5 cm from its equilibrium position and released, what will its initial acceleration be? (8.18) 30