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