A lady standing on a weighing scale. 2. Action force: The lady exerts her weight on the scale. Reaction force:_______________________________________________
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Answer:
Mass of the man m=40kg
Acceleration of lift in upward direction a=2m/s
2
Let the weight shown by machine be N.
Equation of motion for the body : ma=N−mg
We get N=m(a+g)
∴ N=(40)(2+10)=480 N
Thus weight of the man recorded by machine W
′
=
g
N
∴ W
′
=
10
480
=48 kg
Explanation:
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