Kinematics Question 440

Question: A vector having magnitude 30 unit makes equal angles with each of X, Y and Z axes. The components of vector along each of X, Y and Z axes are

Options:

A) 103 unit

B) 103 unit

C) 153 unit

D) 10 unit

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Ax=Ay=Az

Now, A=Ax2+Ay2Az2=3Ax
Ax=A3=303=103



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