Three forces act at point O as shown. Force F3 lies in the x-y plane.
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Three forces act at point O as shown. Force F3
lies in the x-y plane.
Select the expression that denotes a unit vector in the direction of F1 .
a. - 1/3 i - 2/3 j - 2/3 k
b. - 1/3 i + 2/3 j + 2/3 k
c. - 1/3 i + 2/3 j - 2/3 k
d. - 1/3 i - 2/3 j + 2/3 k
Determine the direction angles (α, B ,y ) for F₂ .
a. (103ᵒ , 72.1ᵒ , 22.6ᵒ )
b. (103ᵒ ,108ᵒ , 22.6ᵒ )
c. (76.7ᵒ , 72.1ᵒ ,157ᵒ )
d. (103ᵒ , 72.1ᵒ ,157ᵒ )
Determine the angle between F1 and F3 .
a. 26.0ᵒ
b. 132ᵒ
c. 90.0ᵒ
d. 0
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