Practice question

Given: A block of mass 1 kg oscillates with a spring of k = 100 N/m . If the amplitude is 10 cm, what is the total energy? These values define the system as per NCERT data. Formula: Total energy: E = 1/2 k A². This is the standard NCERT relation for this phenomenon. Substitution & Calculation: A = 0.1 m, k = 100 N/m . E = 1/2 × 100 × (0.1)² = 0.5 J . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.