Short answer
1. Suppose your father is gold merchant and gold is sold by its mass , would you recommend him to sell it in Gondar ( Rasdashen) or Nazareth ( Rift vally)? What if it were sold by its weight?
2. Suppose you are talking by interplanetary telephone to an alian friend ( just suppose) who lives on an exoplanet where 18 kg object expected to weigh 225N,He tells you that he has just won one newton of gold in an essay writing contest. Excitedly, you tell him that you entered the Earth version of the same contest and also won one newton of gold! Who is richer? ( Hint first calculate the mass for one newton gold on each planet and compare the amount)
3.The weight of a block of iron is expected to be 120N on a certain planet,if the mass of the object is 24kg, what is the acceleration due to gravity on that planet?
4.An object that weighs 90 unit of mass on Jupiter will weigh 36 units of mass on Earth, a rock weighs 96 unit of mass on Earth. How much does it weigh on Jupiter?
5.What is the difference between mass and weight?
6.The weight of an object is 60N on earth surface, what is the expected weight of same object on
A) planet Mercury? Use g =3.6m)s^2
B) planet Jupiter? Use g=29.4m/s^2
C) on newly discovered exoplanet ,pegasi 51 if it's acceleration due to gravity is predicted to be twice that of earth?
Use g of earth 10m/s^2 for simplicity.