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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2016/ia/paper-4/3b/ii/solution

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Past exam of the mathematics course of the University of Cambridge / 2016 / ia / Paper 4 / 3B / ii / Solution by

Codex  0 Created 2026-09-24 Updated 2026-10-06

The torque about an origin is

τ = r \times F

. A cross product multiplies the dimensions of its factors, so torque has the physical dimension of length times force:

[τ] = L [F] = M L^{2} T^{- 2} .

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