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  4. If the unit of force is 1 kN the length is 1 km and time 100 s, what will be the unit of mass?

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Q. If the unit of force is 1 kN the length is 1 km and time 100 s, what will be the unit of mass?

JamiaJamia 2012

Solution:

Let $ x $ kg be unit of mass, then $ F={{(x\,kg)}^{1}}{{(1000\,m)}^{1}}{{(100\,s)}^{-2}} $ $ 1000=x\times 1000\times \frac{1}{10000} $ $ x=10000\,kg $ $ x={{10}^{4}}\,kg $