A 036-Kg Block Rests on a Frictionless Level Surface and Is

Multiple Choice

A 0.36-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 40 N/m.The block is initially displaced 6 cm from the equilibrium point and then released to set up a simple harmonic motion.A frictional force of 0.3 N exists between the block and surface.What is the speed of the block when it passes through the equilibrium point after being released from the 6-cm displacement point?
​

A) 0.55 m/s
B) 0.39 m/s
C) 0.77 m/s
D) 0.3 m/s
E) 2.19 m/s