A block of mass m is attached to a string and suspended inside an otherwise empt

Question

A block of mass m is attached to a string and suspended inside an otherwise empty box of mass. The box rests on a scale that measures the system's weight. (a) If the string breaks, does the reading on the scale change? Yes No Explain your reasoning. This answer ha not bean graded yet (b) Assume that the string breaks and the mass m rails with constant acceleration g, Find the magnitude and direction of the acceleration of the center of mass of the box-block system. (Use any variable or symbol stated above as necessary. Let J represent the upward direction.) Cm = (C) Using the result from (b), determine the reading on the scale while m is in free-fall. (Use any variable or symbol stated above as necessary.) Fn =

Explanation / Answer

(a)
Yes; initially the scale reads (M + m)g. While the block is in free fall, the reading is Mg.

(b)
Using Newton

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