Physics (a) the largest known type of dinosaur was the brachiosaurus, which had a mass of 77,000 kg. what was the weight of the brachiosaurus in newtons? (show your calculations) (b) if the brachiosaurus had lived on a planet whose gravity was half that of earth's, what would its mass have been? what would its weight in newtons have been?

 A) Mass of dinosaur = 77,000 kg

     Weight of dinosaur = 755370 N

B)  Mass of dinosaur = 77,000 kg

      Weight of dinosaur = 377685 N

Explanation:

 A) Mass of dinosaur the brachiosaurus = 77,000 kg

     We have weight of body = mg = 77,000*9.81 = 755370 N

 B) Mass of a body is constant, it will not get affected by change in acceleration due to gravity value.

    So, Mass of dinosaur = 77,000 kg

     We have weight of body = mg' = m*g/2 = 77,000*9.81/2 = 377685 N

conservation of mass

mass before something happens = mass afterwards