Question

If mass of the planet is 10% less than that of

the earth and radius of the planet is 20%
greater than that of the earth then the weight
of 40kg person on that planet is

Answer 1

25kg

Step-by-step explanation:

The formula for acceleration due to gravity is:

`g=(GM)/(r^2)`

Here, G represents a constant and M represents the mass of the object. We don't need to know the actual values to solve this, then: We can just multiply by the amount they are multiplied relative to earth.

`g=(G(0.9M))/((1.2r)^2)=0.625g`

Multiplying this by the weight of the person on Earth of 40kg, you get 0.625*40=25kg.

Hope this helps!