An object of mass 5kg is taken from a height of 10 m to a height of 30 m. What is the increment in its potential energy? (Assume g = 10m/s^2)(a) 500 J(b) 1000 J(c) 1500 J(d) 2000 JThis question was addressed to me in an interview.The above asked question is from Potential Energy topic in section Work, Energy and Power of Physics – Class 11

An object of mass 5kg is taken from a height of 10 m to a height of 30

1.	An object of mass 5kg is taken from a height of 10 m to a height of 30 m. What is the increment in its potential energy? (Assume g = 10m/s^2)(a) 500 J(b) 1000 J(c) 1500 J(d) 2000 JThis question was addressed to me in an interview.The above asked question is from Potential Energy topic in section Work, Energy and Power of Physics – Class 11
Answer» The CORRECT option is (b) 1000 J The explanation is: PE = m x g x h m = 5 kg g = 10 m/s^2 Let; H1 = 10m h2 = 30m PE1 = 5 x 10 x 10 = 500 J PE2 = 5 x 10 x 30 = 1500 J Increment in PE = PE2 – PE1 = 1500 – 500 = 1000 J.

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