A man weighs 80 kg He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 ms−2. What would be the reading on the scale?g=10ms−2
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a
Zero
b
400 N
c
800 N
d
1200 N
answer is D.
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Detailed Solution
Reading of weighing scale = m (g + a)= 80 (10 + 5) = 1200 N