Question

A stone of mass 500g is raised from a height of 2m to 4m .Find the change in its potential energy

Answer 1

Answer:

9.8J

Explanation:

• change in P.E=P.E at 4m- P.E at 2m. =19.6J-9.8J

Answer 2

Answer:

10J

Explanation:

potential energy = mgh

- mass = 500 g = 0.5 Kg

- g = 9.8, approx 10

- h1 = 2m

- h2 = 4m

P.E1 = 0.5 x 10 x 2 = 10

P.E = 0.5 x 10 x 4 = 20

change in P.E = 20-10

Ans = 10

Hope this helps!