Rank the gravitational forces exerted on the earth by the following objects.

(basketball, human being, skyscraper, car)

largest to smallest force.

Explanation:

According to newton's law of gravitation , equal force of attraction are applied on two masses m₁ and m₂ placed at distance d . This force is given by the expression

F = G m₁ m₂ / d²

If one of the masses be earth with mass M then d = radius of earth R

Force F = G Mm₁ / R²

this force is applied on both the earth and mass m₁ in equal magnitude and in opposite direction.

In the formula F is proportional to m₁

among the given objects in the question , m₁ of object varies in the following order.

skyscraper > car > human being > basket ball

So Force F on the earth by them will also vary in the same order.

i wanna say it’s between b and d, leaning more towards b.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.