1) an astronaut has 80 kg mass on earth
(a)what is his weight on earth?
(b)what will be his mass and weight on mars where g=3.7 m/s square
2)a certain particle has a weight of 30N at a place where the acceleration due to gravity is 9.8 m/s square
(a) what are its mass and weight at a place where acceleration due to gravity is 3.5 m/s square
(b)what are its mass and weight at a place where acceleration due to gravity is 0
1.Mass of astronaut,m = 80 kg
Weight on earth = mg = (80)(9.8) N = 784 N
Weight on mars = mg' = (80)(3.7) N = 296 N
2.
Weight of the body, W = 30 N =mg
Mass of the body, m = W/g = 3.06 kg
New weight of the body, W' = mg' = (3.06)(3.5)N = 10.71 N
3. Mass remains the same but weight becomes zero.