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Resultant of vectors 3P and 2P is vector...

Resultant of vectors 3P and 2P is vector R. When the first vector is doubled, R also doubles. Find the angle between the two vectors.

Text Solution

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The correct Answer is:
`120^@`
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Resultant of two vectors vec(3p) and vec(2p) is R. If first vector is doubled then the resultant is also doubled. Calculate the angle between the two vectors.

2P and P are two vectors inclined to each other at such an angle that if the 1 st vector is doubled , the value of the resultant becomes three times. What is the angle between the two vectors ?

Knowledge Check

  • Two vectors of magnitude 3 units and 4 units have a resultant vector of magnitude 5 units. The angle between the vector is

    A
    `0^@`
    B
    `30^@`
    C
    `60^@`
    D
    `90^@`

  • Magnitude of each of two vectors is P. Magnitude of the resultant of the two is also P. angle between the vectors is

    A
    `0^@`
    B
    `60^@`
    C
    `120^@`
    D
    `90^@`

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