A 1000 kg elevator is lifted 20 m. What is the work done against gravity? (g = 10 m/s²)
Q1. A 1000 kg elevator is lifted 20 m. What is the work done against gravity? (g = 10 m/s²)
Answer: 200 kJ
Explanation: Work done = mgh = 1000 kg × 10 m/s² × 20 m = 200 kJ. Option A fails due to miscalculation.