Question

please give an explained answer ​

Answer 1

Answer:

hope it wil helpful

Explanation:

Acceleration due to gravity of earth,

g=G×

R

2

M

=9.8m/s

2

If mass of planet, m = M/2

And radius of planet, r= R/2

Acceleration due to gravity on the surface of planet will be:

g=G×

r

2

m

----------(i)

m=

2

M

------------(ii)

r=

2

R

--------(iii)

Put (ii) and (iii) in (i) eq. we get

g=G×

(

2

R

)

2

2

M

=

2

4

×(G×

R

2

M

)

g=2×9.8m/s

2

g=19.6m/s

2