A) 1000 kg
B) 1kg
C) 10000 kg
D) 100 kg
Correct Answer: C
Solution :
Let unit of mass\[x\]is kg Then, \[F=(x\,kg)(1000m){{(100s)}^{-2}}\] \[1000=x\times 1000\times \frac{1}{10000}\] \[x=10000\text{ }kg\] \[x={{10}^{4}}\text{ }kg\]
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