Question

Find the potential energy possessed by a stone situated at the roof of a building of height 5 metre. Given mass of stone 500 grams and acceleration due to gravity equal to 10 m/s^2 *​

Answer 1

Answer:

25 J

Explanation:

  Potential energy of an object of mass 'm' at a height 'h' from ground is given by mgh.

  Here,

 mass = 500 g = 500/1000 kg

          = 0.5 kg

 height = 5 metre

  g = 10 m/s^2

Hence,

 PE = mgh

      = 5 * 10 * 0.5  J

      = 25 J

Answer 2

Ep=mgh

m=500g or 0.5 kg

g=10m/s^2

h=5m

Ep=mgh

0.5×10×5

25W