Dimensional Analysis

Question 1

Recall common derived SI units (e.g N, J, W) and express them in terms of base units

Answer 1

• Newtons is a force which is mass x acceleration - therefore it is kg.ms-²
• Joules is derived from work done - force x distance - therefore it is kg.m²s-²
• Weight is derived from mass x gravitational field strength - therefore it is kg.ms-²

Question 3

Concept of dimensional Homogeneity

Answer 3

• An algebraic equation must satisfy this condition