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Asked by Atim Last Modified
Answer 
Spandan Maikap
Since lift is descendin so the downward force (i.e.weight) is greater than upward reactionary force so
mg-R=m a
R=m(g-a)
R=50(9.8-9)
R=50(0.8)
R=40 N
So the reading of weighing scale is =40/9.8
=4.08kg
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