Question

If density of the earth increased 4 times and it's radius become to half of what it is our weight will?

Answer 1

Answer:

m=88dr2/21m

Explanation:we know that ,density = mass / volume

so, given density increased by 4 times = 4d

radius becomes to half r/2

hence, 4d=m/4/3πr3 since, volume of earth (sphere)=4/3πr3so

So by solving we get m(mass)=88dr2/21m