Question

taking the acceleration due to gravity at the earths surafe equal to 9.8m/s^2 and G=6.67x10^-11si unit .calculate the average velocity of the planet mars given that its diameter=6780km and the acceleration due to gravity on its surface =0.38​

Answer 1

hope it helps you.........

Answer 2

Explanation:

M= mass of earth

R= radius of earth =6400km=6.4×10

6

m

g

1

= acceleration due to gravity on the surface of earth =9.8m/s

2

h= height above the surface of earth 480km=0.480×10

6

m

g

2

= acceleration due to gravity above the surface of earth=?

acceleration due to gravity on the surface is given

g

1

=

R

2

GM

----------------------------(1)

acceleration due to gravity above the surface is given:

g

2

=

(R+h)

2

GM

------------------(2)

g

1

g

2

=

R

2

GM

(R+h)

2

GM

g

1

g

2

=

(R+h)

2

R

2

9.8

g

2

=

((6.4×10

6

)+(0.480×10

6

))

2

(6.4×10

6

)

2

g

2

=8.5m/s

2

.