Practice question

Given: A spring-mass system has m = 0.6 kg, k = 240 N/m . If displaced by 7 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 standard NCERT relation. Substitution & Calculation: A = 0.07 m, k = 240 N/m . E = 0.5 × 240 × (0.07)² = 0.5 × 240 × 0.0049 = 0.588 J . Result: The computed value matches expected outcome and confirms correct choice as per NCERT.