Question

gravity is a force between any two objects with mass. why doesn't a person feel a gravitational force between him/herself and another person?a)a person doesn't exert a gravitational force.b)the two gravitational forces cancel each other out.c)the gravitational forces of people is so small it is overshadowed by that of earth.d)there are so many people we are actually balanced by all the different gravitational forces.

Answer 1

If you and your brother both have 70 kg of mass, then . . .

-- you both weigh about 154 pounds on Earth.

-- You both weigh about 25 pounds on the Moon.

-- If you stand about 2 meters (6-1/2 feet) apart, then the force
of gravity pulling you together is about 8.2 x 10⁻⁸ newton.

That's about 0.00000029 ounce.

THAT's why.

The correct choice is 'c'.

Answer 2

c)the gravitational forces of people is so small it is overshadowed by that of earth.

Step-by-step explanation:

The gravitational force between two objects is given by:

`F=G(m_1 m_2)/(r^2)`

where

G is the gravitational constant

m1 and m2 are the masses of the two objects

r is the distance between the two objects

From the formula, we see that the gravitational force depends on the masses of the objects: since the mass of the Earth (
`5.97\cdot 10^(24) kg` is much much larger than the average mass of one person (80-100 kg), then the gravitational force exerted by the Earth on a person is also much much larger than the gravitational force between two people.