A mass M = 3.0kg on a frictionless platform a height h = 10.0m above the ground is pushed against a spring with spring constant k by amount % = 15cm. The mass is then released and travels across the platform down a curved track. At the bottom of the track is a fricative surface with uk = 0.3. Gravitational potential at the bottom of the ramp is 0. Answer the following, I-lk a. If the Kinetic energy at Point A is equal to gravitational potential energy, what must the spring constant of the spring be? b. Calculate the speed of the mass at Point A after it leaves the spring, but before it reaches the first slope. c. How much work is done on the mass between Point A and B? What force is the causing this work? d. Find the speed at Point B, after the mass has reached the bottom of the ramp but before it reaches the fricative surface. e. How far does the mass travel along the fricative surface before it comes to a stop