A Spring (K = 600 N/m)is at the Bottom of a Frictionless

question 5

Multiple Choice

A spring (k = 600 N/m) is at the bottom of a frictionless plane that makes an angle of 30 $\degree$ with the horizontal.The upper end of the spring is depressed 0.10 m,and a 2.0-kg block is placed against the depressed spring.The system is then released from rest.What is the kinetic energy of the block at the instant it has traveled 0.10 m and the spring has returned to its uncompressed length?

• A)2.0 J
• B)1.8 J
• C)2.2 J
• D)1.6 J
• E)1.0 J

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