Question

find the gravitational acceleration of a space ship at a distance equal to double of earths radius from the centre of the earth

Answer 1

∵g at earth is 9.8 from the formula of g=G×MASS OF EARTH ÷R² IF R IS TWICE THEN g =G×MASS OF EARTH÷(2R)²

OR,G×MASS OF EARTH ÷4R²

OR,9.8÷4=2.45 m÷s²