A 038-Kg Block Rests on a Level Surface and Is Attached

Multiple Choice

A 0.38-kg block rests on a level surface and is attached to a horizontally aligned spring with a spring constant of 55.0 N/m.The block is initially displaced 4.8 cm from the equilibrium point and then released to set up a simple harmonic motion.A frictional force of 0.50 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 4.8-cm displacement point?

A) 0.21 m/s
B) 0.32 m/s
C) 0.64 m/s
D) 0.46 m/s
E) 1.8 m/s