MCQ
A force vector applied on a mass is represented as $\vec{F}=6 \hat{i}-8 \hat{j}+10 \hat{k}$ and accelerates with $1 m / s ^2$. What will be the mass of the body in $kg$.
- ✓$10 \sqrt{2}$
- B20
- C$2 \sqrt{10}$
- D10
✓
Answer
Correct option: A.
$10 \sqrt{2}$
(a) Mass $=\frac{\text { Force }}{\text { Acceleration }}=\frac{|\vec{F}|}{a}$$=\frac{\sqrt{36+64+100}}{1}=10 \sqrt{2} kg$
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