Aditya, By polygon law of vector addition, shouldn't the resultant be zero?
Four forces of magnitude P,2P,3P and 4P act along the four sides of square ABCD in cyclic order.Use the vector method to find the resultant force.
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4 Answers
Aditya Bhutra
·2012-05-07 03:51:30
P\hat{i} + 2P\hat{j} + 3P(-\hat{i}) + 4P(-\hat{j}) = - (2P\hat{i} + 2P\hat{j})
\left| - (2P\hat{i} + 2P\hat{j})\right| = 2\sqrt{2}P
PS : you cannot find resultant force since the directions are not specified . only magnitude can be found .
Vivek @ Born this Way
·2012-05-07 05:27:59
Aditya Bhutra
·2012-05-07 09:58:52
the forces have directions as that of the sides of a square,
but since their magnitudes are not same they will not exactly cancel out each other .
Anik Chatterjee
·2012-05-08 03:25:43
ya....the correct answr given is 2√2P....and the force is acting at an angle of 225° wen measured from positive x-axis.