Laws Of Motion Question 215
Question: A force vector applied on a mass is represented as $ \vec{F}=6\hat{i}-8\hat{j}+10\hat{k} $ and accelerates with $ 1m/s^{2} $ . What will be the mass of the body[CBSE PMT 1996]
Options:
A) $ 10\sqrt{2}kg $
B) $ 2\sqrt{10}kg $
C) 10 kg
D) 20 kg
Show Answer
Answer:
Correct Answer: A
Solution:
$ m=\frac{F}{a}=\frac{\sqrt{6^{2}+8^{2}+10^{2}}}{1}=\sqrt{200} $
$ =10\sqrt{2}kg $
