Advanced Dimensional AnalysisHardQuestion 5031
Question
If the units of length and force are doubled, the unit of energy will change by a factor of:
- A2
- B4Correct
- C8
- D1
Correct answer
4
Explanation
Energy = Force × Length. If both force and length are doubled, new unit of energy = 2F × 2L = 4FL = 4 times the old unit.