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A stone of mass 500g is raised from a height of 2 to 4 m .find the change in its potential energy ?
Asked by angelankita225 | 11 Aug, 2018, 10:18: PM
Potential Energy is the energy possessed by a body due to change in it's shape or due to the position it holds above the surface of the Earth.
Mathematically, it is expressed as:
Potential energy (PE) = Mass (m) x acceleration due to gravity (g) x Height above the Earth (h)

For the given body, if it changes it's height, the change in it's potential energy is given by:
P.E = m x g x (hfinal  - hinitial)
P.E = (0.5) x (9.8) x (4-2) ...(In SI system, 500 g = 0.5 kg ; g = 9.8 m/s2)
P.E = 9.8 Joules
Answered by Abhijeet Mishra | 14 Aug, 2018, 02:17: PM

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