Question

pls help people

use the formula and show the working ​

Answer 1

$\huge\underbrace\mathfrak\color{lime}{ †\: Answer:–}$

$\huge{\mathfrak{\overline{\underline{\underline{\blue{Given}}}}}}$

Mass of the earth ( Me) = $6 × 10^{24}kg$

Mass of the moon ( Mm) = $7.4 × 10^{22}kg$

Distance [d] = $3.84 × 10^{5}km$

Constant gravitational value = $6.7 × 10^{-11}Nm^{2}kg^{-2}$

$\huge{\mathfrak{\overline{\underline{\underline{\blue{To \:find}}}}}}$

Force exerted by the earth on the moon ?

Force [F] = ??

Now ;

We know the formula :-

${\green{\overline{\green{\underline{\blue{\boxed{\pink{\mathtt{F = G \frac{Me × Mm}{R²}}}}}}}}}}$

$\longrightarrow$$\bold{F = \frac{(6.7 × 10^{-11})×(6 × 10^{24})×(7.4 × 10^{22})}{(3.84 × 10^{5})²}}$

$~~~~~~~~~~~~~~~~~\longrightarrow$$\bold{2.01 × 10^{20}N}$

So the force is $\bold{2.01 × 10^{20}N}$

Thus the force exerted by the earth on moon is $\bold{2.01 × 10^{20}N}$

Answer 2

Answer:

Given that,

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