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If the resultant of two forces of magnit...

If the resultant of two forces of magnitudes P and Q acting at a point at an angle of `60^(@)` is `sqrt(7)`Q , then P/Q is

A

1

B

`3//2`

C

2

D

4

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The correct Answer is:
C
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MOTION-VECTOR -Exercise - 2
  1. A vector is not changed if -

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  2. If the resultant of two forces of magnitudes P and Q acting at a point...

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  3. The resultant of vecA and vecB makes an angle alpha with vecA and vec ...

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  4. A person moves 30 m north. Then 30 m east, then 30sqrt(2) m south-west...

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  5. A man moves towards 3m north then 4 m towards east and finally 5 m tow...

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  6. I started walking down a road to day-break facing the sun. After walki...

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  7. How many minimum number of vectors in different planes can be added to...

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  8. What are minmum number or unequal fores whose vector sum is zero ?

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  9. If |vecA-vecB|=|vecA|=|vecB|, the angle between vecA and vecB is

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  10. Two vectors vecA and vecB are such that vecA+vecB=vecA-vecB. Then

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  11. Find the vector sum of N coplanar forces, each of the magnitude F,when...

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  12. Three forces P,Q and R are acting at a point in the plane. The angle b...

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  13. Two forces, each of magnitude F have a resultant of the same magnitude...

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  14. The resultant of two forces, one double the other in magnitude is perp...

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  15. A particle is moving on a circular path with constant speed v then the...

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  16. A man moves towards 3m north then 4 m towards east and finally 5 m tow...

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  17. A particle is acted upon by the forces vecF(1)=2hati+ahatj-3hatk , vec...

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  18. A vector vec(A) of length 10 units makes an angle of 60^(@) with a vec...

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  19. The component of a vector is

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  20. The magnitude of the vector product of two vectors vecA and vecB may b...

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