Question

1. How much work is done in raising a stone of mass 5 kg to a height of 5 m? (g = 10 m/s) [Ans: 250 ] ​

Answer 1

Answer:

250 is the correct ANSWER !!

Explanation:

we can use the concept of potential energy

Uf - Ui = -W

mgh-0 = -w

m=5kg g=10m/s2 h=5m

5*10*5 = -w

so w= -250

Answer 2

Answer: 250 J

Explanation:

Potential Energy = Mass × Gravity × Height

                            = mgh

                            = 5 kg × 10 m/s × 5 m

                            = 250 Joules

∵ Energy = Work done,

Work = 250 Joules

         = 250 J

Have a great day :D

-SHM