Question:
A box whose mass is $5\, kg$ lies on a spring balance inside a lift. The lift starts to ascend with an acceleration of $2\, ms ^{-2}$. The reading of the machine or balance is $\left(g=10\, ms ^{-2}\right)$
A box whose mass is $5\, kg$ lies on a spring balance inside a lift. The lift starts to ascend with an acceleration of $2\, ms ^{-2}$. The reading of the machine or balance is $\left(g=10\, ms ^{-2}\right)$
Updated On: Jul 14, 2022
- 50 kg
- zero
- 49 kg
- 60 kg
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The Correct Option is D
Solution and Explanation
Reading $=m g +m a=5 \times 10+5 \times 2=60\, kg$
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Concepts Used:
Acceleration
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