Question

at a height equal to twice of radius of the earth from Earth's surface the value of g decreases to
a. one nineteenth
b. one ninth
c. one eighth
d. one third​

Answer 1

Answer:

0.25

Explanation:

if Earth’s radius is twice its current size, its surface gravity is going to be 0.25 times its current surface gravity.

Answer 2

Answer:

Answer

Correct option is

C

4

g

Acceleration due to gravity = g=

R

2

GM

earth

, R = distance from the centre of the earth.

At a height = R above earth's surface g=

(R+R)

2

GM

earth

=

4R

2

GM

earth

=

4

g

Option C.