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Get Answers to all your Questions
Q5.13. A man of mass 70 kg stands on a weighing scale in a lift which is moving
(a) upwards with a uniform speed of 10 m s-1
What would be the readings on the scale in each case?
Answers (1)
Since lift is moving with a constant speed or in this case constant velocity so the acceleration provided to man by lift is zero.
The net force on the man will be zero. So a = 0.
Using Newton's law of motion, we can write :
or
Thus
So, reading on weighing scale will be :
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