Question

If
the
radius
and
the
mass
of
Earth
are
halved,
find
the
value
of
‘g‘ on


the
surface
earth.​

Answer 1

Answer:

Which is  four times of its original value.

Explanation:

the formula for the acceleration due to gravity (g) is given as  g=GM/R^2 (i)

Where G is universal gravitational constant and M is mass of the earth with R as the radius of the earth.

Now replacing R by R/2 in the equation-1

we get the new value of g as g(new)=GM/R^2  into 4

​ so  , the value of g on the surface of the earth would be eight times the present value.