A mass resting on a horizontal, frictionless surface is attached to one end of a spring;...

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A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It takes 3.9 J of work to compress the spring by 0.14 m. If the spring is compressed, and the mass is released from rest, it experiences a maximum acceleration of 12 m/s². Part A Find the value of the spring constant. Express your answer to two significant figures and include the appropriate unit ΜΑ k = Value Units Submit Request Answer Part B ? Find the value of the mass. Express your answer to two significant figures and include the appropriate units m = Value Submit Request Answer Provide Feedback ? Units A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It takes 3.9 J of work to compress the spring by 0.14 m. If the spring is compressed, and the mass is released from rest, it experiences a maximum acceleration of 12 m/s². Part A Find the value of the spring constant. Express your answer to two significant figures and include the appropriate unit ΜΑ k = Value Units Submit Request Answer Part B ? Find the value of the mass. Express your answer to two significant figures and include the appropriate units m = Value Submit Request Answer Provide Feedback ? Units