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Question: A man weighs \(80kg.\) He stands on a weighing scale in a lift which is moving upwards with a unifor...

A man weighs 80kg.80kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5m/s2.5m/s^{2}. What would be the reading on the scale. (g=10m/s2)(g = 10m/s^{2})

A

400 N

B

800 N

C

1200 N

D

Zero

Answer

1200 N

Explanation

Solution

Reading of weighing scale =m(g+a)=80(10+5)=1200N= m(g + a) = 80(10 + 5) = 1200N