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A 020-Kg Block Rests on a Frictionless,level Surface and Is Attached

Question 40

Multiple Choice

A 0.20-kg block rests on a frictionless,level surface and is attached to a horizontally aligned spring with a spring constant of 80 N/m.The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion.What is the speed of the block when it passes through the equilibrium point?


A) 2.1 m/s
B) 1.6 m/s
C) 0.80 m/s
D) 0.57 m/s

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