Question

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1.Two object separated by a distance of 6 km having the mass of 36 kg each . find the gravitational force ?


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Answer 1

HEY MATE ◾ ◾

READ IT THOROUGHLY....

AND I THINK AFTER IT YIU CAN BE ABLE TO SOLVE BY UR SELF....

You can find the gravitational force between two objects by applying the Universal Gravitation Equation, provided you know the mass of each object and their separation.

With this equation, you can make calculations to determine such things as the force between the Earth and the Moon, as well as between two large masses.

Questions you may have include:

What is the Universal Gravitational Equation?

What is the force of attraction between the Earth and the Moon?

What is the force of attraction between two other objects?

Universal Gravitation Equation

The Universal Gravitation Equation is:

F = GMm/R2

where

F is the force of attraction between two objects in newtons (N)

G is the Universal Gravitational Constant = 6.674*10−11 N-m2/kg2

M and m are the masses of the two objects in kilograms (kg)

R is the separation in meters (m) between the objects, as measured from their centers of mass

Force attracting Earth and Moon

To calculate the gravitational force pulling the Earth and Moon together, you need to know their separation and the mass of each object.

Distance

The Earth and Moon are approximately an average of 3.844*105 kilometers apart, center to center.

(Note that the orbit of the Moon around the Earth is not a true circle, so an average separation is used. This also means that the force of attraction varies.)

Since the units of G are in N-m2/kg2, you need to convert the units of R to meters.

R = 3.844*108 m

Mass of each object

Let M be the mass of the Earth and m the mass of the Moon.

M = 5.974*1024 kg

m = 7.349*1022 kg

Force of attraction

Thus, the force of attraction between the Earth and Moon is:

F = GMm/R2

F = (6.674*10−11 N-m2/kg2)(5.974*1024 kg)(7.349*1022 kg)/(3.844*108 m)2

F = (2.930*1037 N-m2)/(1.478*1017 m2)

F = 1.982*1020 N

Note: Notice how all the units, except N, canceled out.

HEY MATE.....