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Q: An object of 5.0 kg is raised to a height of 2 m, in this process, how much work was done – (g=9.8m/s²)
  • A. 49 joule
  • B. 10 joule
  • C. 19.6 joule
  • D. 98 joule
Correct Answer: Option D - Work done is given by the equation W = mgh where m = mass g = acceleration due to gravity h = height Hence work done = 5 x 9.8 x 2= 98 Joule
D. Work done is given by the equation W = mgh where m = mass g = acceleration due to gravity h = height Hence work done = 5 x 9.8 x 2= 98 Joule

Explanations:

Work done is given by the equation W = mgh where m = mass g = acceleration due to gravity h = height Hence work done = 5 x 9.8 x 2= 98 Joule