0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

A body weighs 72N on the surface of the earth. What is the gravitational force on it at a height equal to half the radius of the earth from the surface?
  1. 72N
  2. 28N
  3. 16N
  4. 32N

A
16N
B
28N
C
72N
D
32N
Solution
Verified by Toppr

Lrt Re be the radius of earth
Given h=Re/2
Since h is comparable to Re
So, gh=GM(Re+h)2
Putting h=Re/2,we get
gh=49×GMR2e=4g9
Where g is acceleration due to gravity at the surface of earth

Therefore weight at a height equal to half of the earth's radius =49×72=32N

Hence correct answer is option D

Was this answer helpful?
0
Similar Questions
Q1
A body weighs 72 N on the surface of earth. What is the gravitational force on it due to earth at a height equal to half the radius of the earth from the surface?
View Solution
Q2
A body weight 72 N on the surface of the earth. What is the gravitational force acting on it due to the earth at a height equal to half the radius of the earth from the surface?
View Solution
Q3

A body weighs 72 N on the surface of the earth. What will be the force of gravity acting on the body at a height equal to half the radius of the earth above the earth's surface?


View Solution