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Q: When an object of 14 kg is at a height of 5 m from the ground, then find the energy contained in it ? (g=9.8ms-When an object of 14 kg is at a height of 5 m from the ground, then find the energy contained in it ? (g=9.8ms-² )
  • A. 528J
  • B. 686m
  • C. 686J
  • D. 668J
Correct Answer: Option C - Given, m = 14 kg, h = 5 m, g = 9.8 m/s² P.E= mgh= 14 × 9.8 × 5 = 686 J
C. Given, m = 14 kg, h = 5 m, g = 9.8 m/s² P.E= mgh= 14 × 9.8 × 5 = 686 J

Explanations:

Given, m = 14 kg, h = 5 m, g = 9.8 m/s² P.E= mgh= 14 × 9.8 × 5 = 686 J