Question: A metal block of mass m is attached to the ceiling by a spring. Connected to the bottom of this block is a string that

A metal block of mass m is attached to the ceiling by a spring. Connected to the bottom of this block is a string that supports a second block of the same mass m, as shown in FIGURE 9-36. The string connecting the two blocks is now cut.

(a) What is the net force acting on the two-block system immediately after the string is cut?

(b) What is the acceleration of the center of mass of the two-block system immediately after the string is cut?

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