Three forces (9i+3pj)(9\mathbf{i} + 3p\mathbf{j})(9i+3pj) N, (−2i+4j)(-2\mathbf{i} + 4\mathbf{j})(−2i+4j) N and (5qi+5j)(5q\mathbf{i} + 5\mathbf{j})(5qi+5j) N act on a particle AAA.
Given A A\,A is in equilibrium find the values of p p\,p and qqq.
182 exam-style questions on Edexcel A Level Maths Forces and Motion, covering 10.1 Force Diagrams, 10.2 Forces as Vectors, 10.3 Forces and Acceleration, 10.4 Motion in 2 Dimensions, 10.5 Connected Particles, and 10.6 Pulleys. Each one has a worked solution and a mark scheme showing where the marks go.