Question

what is the potential energy possessed by a stone of mass 50 gram when it is at the height of 20 m above the ground if g is 20 m per square seconds​

Answer 1

Answer:

10 Joules

Explanation:

I am assuming you are in high school and taking ground as datum( means potential energy at ground = zero).

Now

Potential energy of an object of mass m Kg at height h metres above ground = m×g×h Joule

according to your question

m = 50 gram = 0.05 Kg

h = 20 m

g = 10 m/s² [ I am very sure you have done typing mistake as 20 m/s² is not possible near ground]

Now,

Potential Energy = m × g × h

= 0.05×10×20

= 10 Joule