The reading on the scale when the system is placed on elevator accelerating downward is 7.8m (N).
The given parameter
The reading on the scale is determined by applying Newton's second law of motion;
R = mg - ma
R = m(g - a)
R = m(9.8 - 2)
R = 7.8 m. (N)
where;
Thus, the reading on the scale when the system is placed on elevator accelerating downward is 7.8m (N).
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