BET107 Mechanics of structures 1 Worksheet 1 – Introduction to Statics Student Name________________________ Student ID__________ Date____________ 1. Match the items described in the table. Question page 1 Mechanics When the change in distance between any two of its points is negligible for the purpose at hand 2 Space Quantities with which only a magnitude is associated 3 Time Quantities possess direction as well as magnitude and must obey the parallelogram law of addition 4 Mass The diagram of an isolated body with the representation of all external forces acting on it 5 Force The length of a specific platinum-iridium bar kept at the International Bureau of Weights and Measures near Paris, France 6 Particle The measure of succession of events and is a basic quantity in dynamics 7 Rigid body The fraction (1/86400) of the mean solar day 8 Scalar In any equation representing a physical situation, the dimension of every terms on both sides of the equation must be same 9 Vector A body of negligible dimensions 10 Newton’s Second Law The action of one body on another 11 Fundamental dimensions A measure of the inertia of a body, which is its resistance to change of velocity 12 One meter The acceleration of a particle is proportional to the vector sum of forces acting on it and is in the direction of this vector sum 13 One second The physical science which deals with the effects of forces on objects 14 A free-body diagram Length, mass, force and time 15 Dimensional homogeneity The geometric region occupied by bodies whose positions are described by linear and angular measurements relative to a coordinate system   Working page 1 Mechanics 2 Space 3 Time 4 Mass 5 Force 6 Particle 7 Rigid body 8 Scalar 9 Vector 10 Newton’s Second Law 11 Fundamental dimensions 12 One meter 13 One second 14 A free-body diagram 15 Dimensional homogeneity   2. Order the items for solving a problem. Ensure that your answers are reasonable in terms of magnitudes, Directions, common sense etc. Draw conclusions Ensure that your calculations are consistent with the accuracy justified by the data State the governing principle to be applied to your solution Make your calculations Draw any diagrams you need to understand the relationship Be sure to use consistent units throughout your calculations.