A block having mass m= 1 kg moves on a frictionless surface attached to a wall b

Question

A block having mass m= 1 kg moves on a frictionless surface attached to a wall by a spring. The block oscillates back and forth as the spring alternately stretches and compresses about its equilibrium unstretched length of 1.0 m. At one instant of time the spring is 1.2 m. At this instant of time, the spring is pulling the block rightward such that the block has an acceleration of 2.4 m/s^2. The value of the spring constant k of the spring is: (Hint you to use both equations F=ma and F=delta x)

A. 0.2 N/m

B. 1.2 N/m

C. 2.0 N/m

D. 2.4 N/m

E. 12.0 N/m

Explanation / Answer

E. 12.0 N/m

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