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
d
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