Kinematics Question 432

Question: The resultant of A and B it’s R1 . On reversing the vector B, the resultant becomes R2 . What is the value of R12+R22?

Options:

A) A2+B2

B) A2B2

C) 2(A2+B2)

D) 2(A2B2)

Show Answer

Answer:

Correct Answer: C

Solution:

[c] R12=A2+B2+2ABcosθ

R22=A2+B22ABcosθ
R12+R22=2(A2+B2)



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