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Find the resultant forece of the following forces which act upon a particle. (a) ` 30 N due east ` (b) ` 20 N`1 due North (c ) ` 50 N` due West (d) ` 40 N` due South. |
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Answer» Efferctive force along West, ` A = 50 - 30 = 20 N` Effective force along South, B= 40 - 20 = 20 N` :. ` R sqrt (A^2 + B^@) = sqrt ( 20^2 + 20^2) = 20 sqrt 2 N` : ` tan beta = B/A = (20)/(20) = 1 ` or beta 45^@` . |
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