Three forces (7i+4pj)(7\mathbf{i} + 4p\mathbf{j})(7i+4pj) N, (−2i+3j)(-2\mathbf{i} + 3\mathbf{j})(−2i+3j) N and (6qi+5j)(6q\mathbf{i} + 5\mathbf{j})(6qi+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.