Practice question
Question
A 8kg mass falls from 5m onto a spring (k\=2500N/m). What is the maximum compression? (Take g\=10m/s2)
Explanation
Potential energy mgh=8×10×5=400J. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 400 J. This satisfies dimensional consistency and physical conditions given, so option A is scientifically correct.