Physics, asked by ANUDEEP10878, 28 days ago

If resultant of two vectors is perpendicular to small vector then find angle between these vectors. Ratio of their magnitude is 2.​

Answers

Answered by kashvichaurasia819
2

Answer:

The resultant of two vectors u and v is perpendicular to the vector u and its magnitude is equal to half of the magnitude of vector v .

Answered by bsharathan
1

B

=

A

2

+B

2

+2ABcosθ

....(i)

∴tan90

o

=

A+Bcosθ

Bsinθ

⇒A+Bcosθ=0

∴cosθ=−

B

A

Hence, from (i)

4

B

2

=A

2

+B

2

−2A

2

⇒A=

3

2

B

⇒cosθ=−

B

A

=−

2

3

∴θ=150

o

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