32. A force ?⃗ = (4.0?̂ + 2.0ĵ + 3.0?̂ )? acts on a particle with a position vector ?⃗ = (1.0?̂ + 3.0ĵ + 2.0?̂ )?. Find the torque due to this force about the axis passing through the origin.
(A) 
−5.0?̂−5.0ĵ+10?(?∙?) 
(B) 
10?̂+5.0ĵ−5.0?(?∙?
(C) 
5.0?̂−5.0ĵ−10?(?∙?) 
(D) 
5.0?̂+5.0ĵ−10?(?∙?)
(E) 
5.0?̂−5.0ĵ+10?(?∙?)

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統計: A(9), B(1), C(2), D(27), E(0) #2336732

詳解 (共 1 筆)

#5357364

R cross F, 順序錯就會選成A

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