We began the class with a series of questions to review force vectors and the difference between scalar and vector quantities, how to depict a vector quantity and the equilibrium rule. Using a series of questions and demonstrations, we discussed the definition of a support force as having the same magnitude but opposite direction as the weight of an object resting on a flat surface. Given the mass of the object, the weight was shown by the formula weight = mass x the force of gravity. The proper units for each variable was given and the answer given in kg.M/sec/sec. This was given the term Newtons. The force of gravity (acceleration) was given as 9.8 M/sec squared.The following rule was determined: for an object at rest on a horizontal surface, the SUPPORT FORCE = THE WEIGHT.
Showing that the coils in a spring supply the support force when pushed downward, the atoms which make up the flat surface supply the support force when an object is placed on it. Assig: Chapter 2, questions 1-10 in textbook...