A force N acts on a body that is displaced by m

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A force F⃗=4i−2j+3k\vec F=4\mathbf i-2\mathbf j+3\mathbf k N acts on a body that is displaced by d⃗=2i+bj+ck\vec d=2\mathbf i+b\mathbf j+c\mathbf k m. The displacement is perpendicular to i+j+k\mathbf i+\mathbf j+\mathbf k, and the work done is 1212 J. Determine the value of bb. (a) 44 (b) −2-2 (c) 22 (d) −1-1

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