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3 Mechanics

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Question 228

Forces (ki+2j) N(k\mathbf{i}+2\mathbf{j})\text{ N}(ki+2j) N, (3i−kj) N(3\mathbf{i}-k\mathbf{j})\text{ N}(3i−kj) N and (−9i+j) N(-9\mathbf{i}+\mathbf{j})\text{ N}(−9i+j) N act on a particle. The resultant is parallel to 2i−j2\mathbf{i}-\mathbf{j}2i−j.

a.

Determine kkk.

[4]
b.

Hence find the resultant force.

[1]
Markscheme

3 Mechanics Questions

  1. A Level
  2. /Maths
  3. /3 Mechanics

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