Question

By how much force a person pulls the earth if the mass of the person is 45kg and the earth is
6 ❌ 10 to the power 24 .
While the radius of the earth is 6400 km also calculate the acceleration by which the earth moves towards the person .

Answer 1

Answer:

Mass of the Earth m

1

=6×10

24

kg

Mass of the Moon m

2

=7.4×10

22

kg

Distance between the Earth and the Moon d=3.84×10

5

km=3.84×10

8

m

Gravitational Constant G=6.7×10

−11

Nm

2

/kg

2

Now, by using Newton’s law of gravitation

F=

r

2

Gm

1

m

2

F=

(3.84×10

8

)

2

6.7×10

−11

×6×10

24

×7.4×10

22

F=

14.8225×10

16

297.48×10

35

F=20.069×10

19

F=20.1×10

19

N

Hence, the gravitational force of attraction is 20.1×10

19

N