problem01_56 - . 1 . 60 cos cm 80 . 2-=--=-= x y y x z B A...

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1.56: a) From the right-hand rule, the direction of B A × is into the page (the – z -direction). The magnitude of the vector product is, from Eq. (1.22), ( 29 ( 29 . cm 61 . 4 120 sin cm 90 . 1 cm 80 . 2 sin 2 = = φ AB Or, using Eq. (1.27) and noting that the only non-vanishing component is ( 29 ( 29 ( 29 ( 29 2 cm 61 . 4 0 . 60 cos cm 90 . 1 0 . 60 sin cm 80 . 2 60 sin cm 90
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Unformatted text preview: . 1 . 60 cos cm 80 . 2-=--=-= x y y x z B A B A C gives the same result. b) Rather than repeat the calculations, Eq. (1-23) may be used to see that A B has magnitude 4.61 cm 2 and is in the + z-direction (out of the page)....
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