Mechanics 2 / J. S. Berry, E. Graham and R. Porkess ; series editor: Roger Porkess. Berry, J. S. Graham, E. Porkess, R. Mechanics Mathematics. Mechanics - Mathematics Problems, exercises, etc. 531.0151 BEM Answers to selected exercises: p. 136-137. London : Hodder & Stoughton, 1998. 1998. 1998 Text 137 p : eng MEI structured mathematics MEI structured mathematics /