Which of the sets given below may represent the magnitudes of three vectors adding to zero ? (a) 2, 4, 8
Which of the sets given below may represent the magnitudes of three vectors adding to zero ?
(a) 2, 4, 8
(b) 4, 8, 16
(c) 1, 2, 1
(d) 0.5, 1, 2.
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(c) 1, 2, 1.
Explanation:
1,2 and 1 may represent the magnitudes of three vectors adding to zero. For example one of the vector of length 1 should make an angle of
135∘ with x axis and the other vector of length 1 makes an angle of
225∘ with x axis. The third vector of length 2 should lie along x axis.
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