I attach a 2.0-kg block to a spring that obeys Hooke's Law and supply 4.0 J of energy to stretch the spring.I release the block;it oscillates with period 0.30 s.The amplitude is:
A) 38 cm.
B) 19 cm.
C) 9.5 cm.
D) 4.3 cm.

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The Answer of I attach a 2.0-kg block to a spring that obeys Hooke's Law and supply 4.0 J of energy to stretch the spring.I release the block;it oscillates with period 0.30 s.The amplitude is:
A) 38 cm.
B) 19 cm.
C) 9.5 cm.
D) 4.3 cm.

I Attach a 2