Grade 11IIT JEE Entrance Exam

The resultant of three vectors of magnitudes 1,2 and 3 units respectively and whose directions are along the sides of an equilateral triangle taken in the same order is:

Jay .G

9 Years agoGrade 11

1 Answer

Arun

Approved Tutor Answer9 Years ago

if we resolve vector of magnitude 2 & 3 in direction of vector 1.

vector 1 cancel effects thus.

we have left with 2 vectors with magnitude 1 & 2 with 120 degree angle.

Now resultant will be $\sqrt{}$ 3

NOTE- this can also be solved by taking 2 vectors at a time and further sove by taking two vectors(resultant of first two and third vector), and for angle if you make a triangle you will get angle easily.

so please make a triangle and then solve it

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The resultant of three vectors of magnitudes 1,2 and 3 units respectively and whose directions are along the sides of an equilateral triangle taken in the same order is:

Jay .G

1 Answer

Arun

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