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A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if  the lift descends with uniform downward acceleration of 1.8 m/s2 will be _______N. g=10m/s2

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answer is 492.

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Detailed Solution

Given mass =m=60kg Now in an downward accelerating lift w1=m(g−a)⇒w1=60(10−1.8)N=60×8.2N=492N
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A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if  the lift descends with uniform downward acceleration of 1.8 m/s2 will be _______N. g=10m/s2