A cube, whose mass is 0.700 kg, is attached to a spring with a force constant of 132 N/m. The cube rests upon a frictionless, horizontal surface (shown in the figure below). A cube labeled m is attached to the right end of a horizontal spring, and the left end of the spring is attached to a wall. The spring is stretched horizontally such that the cube is displaced by a distance A to the right of its equilibrium position. The cube is pulled to the right a distance A = 0.130 m from its equilibrium position (the vertical dashed line) and held motionless. The cube is then released from rest.   (A) At the instant of release, what is the magnitude of the spring force (in N) acting upon the cube?       (B) At that very instant, what is the magnitude of the cube's acceleration (in m/s2)? m/s2     (c) In what direction does the acceleration vector point at the instant of release?

Question
A cube, whose mass is 0.700 kg, is attached to a spring with a force constant of 132 N/m. The cube rests upon a frictionless, horizontal surface (shown in the figure below).
A cube labeled m is attached to the right end of a horizontal spring, and the left end of the spring is attached to a wall. The spring is stretched horizontally such that the cube is displaced by a distance A to the right of its equilibrium position.
The cube is pulled to the right a distance A = 0.130 m from its equilibrium position (the vertical dashed line) and held motionless. The cube is then released from rest.
 
(A) At the instant of release, what is the magnitude of the spring force (in N) acting upon the cube?
 
 
 
(B) At that very instant, what is the magnitude of the cube's acceleration (in m/s2)?
m/s2
 
 
(c) In what direction does the acceleration vector point at the instant of release?

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