vectors from physics

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1. There are 2 vectors, one in the horizontal direction and other is inclined at an angle of 60⁰ with the vertical.The resultant is in vertical direction and has magnitude P units.The 2 vectors are:

a)P,2P
b)P,Pâˆš3
c)2P,Pâˆš3
d)none of these.

Plz show the ans with steps..

#Mathematics #3D and Vectors

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2 Answers

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Asish Mahapatra ·2010-10-29 11:52:59

Let the hori vector be A and the other be B.

Then B(y) = P
=> |B|*cos(60) = P
=> |B| = 2P

=> B = -2P*√3/2 i + P j
= - P√3 i + P j

A(x) + B(x) = 0
=> A = A(x) i = P√3 i

So, |A| = P√3 and |B| = 2P

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chessenthus ·2010-10-29 13:25:31

correct reply.

thank you.

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vectors from physics

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