alleryA 5 kg bag lifted to a height of 3 m above the ground (g = 10 m/s²) has gravitational POTENTIAL ENERGY of:
A150 J, computed as mgh = 5 × 10 × 3
B15 J, computed as mh = 5 × 3
C50 J, computed as mg = 5 × 10
D30 J, computed as gh = 10 × 3
Answer & Solution
Correct answer: A. 150 J, computed as mgh = 5 × 10 × 3
Gravitational PE = mgh = 5 × 10 × 3 = 150 J. The bag stores this energy by virtue of its raised position.
Keep practising Work and Energy
Browse all Work and Energy questions for CBSE Class 9, or explore more Science topics.
Related questions
Match each energy transformation with its representative apparatus:Match each power and energy commercial unit with its value:Match each work calculation with its sign and meaning:Match each mechanical energy form with its algebraic formula:Work and energy bingoPick the right unitComplete the energy ruleWork and energy numbers