The radius of earth is 6370Km and of mars is 3400 Km. If an object weighs 200N or earth, what will be its weight on mars. The mass of mars is 0.11 that of earth.
Answers
Answer:
y
Citing the mass and radius of Mars is a roundabout way of getting to an important number: Mars’ gravity as a fraction of Earth’s. From a number of common sources [References 1, 2] you can find that Mars has 0.3794 x Earth’s gravity. That means a 200 Newton object will be 200 x 0.3794 = 75.88 Newtons on Mars.
If you don’t have that direct information, a useful ratio is:
Gravity = (R2 / R1) x (D2 / D1)
Where R2 is the radius of planet 2; R1 is the radius of planet 1; D2 is the density of planet 2, and D1 is the density of planet 1.
In this case, making Mars be planet 2 and Earth be planet 1, you get the following values:
R2: 3400
R1: 6370
D2: 3.9335 g/cc [Ref. 2]
D1: 5.514 g/cc [Ref. 3]
Plugging those in:
(3400 / 6370) x (3.9335 / 5.514) = 0.38.
Once you have that 0.38, multiply it by 200N and you get 76N.