A Spring (K = 600 N/m) Is at the Bottom

Multiple Choice

A spring (k = 600 N/m) is at the bottom of a frictionless plane that makes an angle of 30° with the horizontal. The upper end of the spring is depressed 0.10 m, and a 2.0-kg block is placed against the depressed spring. The system is then released from rest. What is the kinetic energy of the block at the instant it has traveled 0.10 m and the spring has returned to its uncompressed length?

A) 2.0 J
B) 1.8 J
C) 2.2 J
D) 1.6 J
E) 1.0 J