3. In a diagram below, a 10 kg object is released from rest on a smooth inclined plane. The distance d from the initial point of the object to one end of the spring is 2.5 m. The spring constant k and the angle theta are 1000 N/m and 40° respectively. The object slides downward and compresses the spring. (Note: 10 cm compression is not a maximum compression)
(a) What is the net work done on the object from the release point to 10 cm compression point?