Question

A body weighs 200 Newton on the surface of the Earth how much will it weigh Halfway down to the centre of the earth ​

Answer 1

Answer:

100N is the answer

Answer 2

Answer:

100N

Explanation:

weight=200N at earth surface

gravity= 10. " " "

mass of body = 200/10=20

Now,

as we go towards centre

g'=g{1-x/Re}

where,

g'=new value of g

x=distance moved below earth surface

Re=radius of earth

acc to question

x=Re/2

g'= g{1-(Re/2)/Re}

g'=g{1-(Re/2)*1/Re}

g'=g(1-1/2)

g'=g*1/2

g'=5

now weight of body at halfway to center of earth =

new weight ''=mg'

=20*5=100Newton