Question

at what height from the earth surface does the accelaration due to gravity decrease by 75 of its value at earth surface

Answer 1

HEY MATE YOIR ANSWER IS AS FOLLOWS:--->

We know that gravity at any height is given as=>

g’ = g (1 - 2h/R) —[1]

Decrease by 1% implies that g’ = 99/100g

Substitute In 1,we get

99/100g = g (1 - 2h/R)

99/100 = 1 - 2h/R

2h/R = 1 - 99/100

2h/R = 1/100

h = R/200

h = 6400/200 (R = 6400KM)

Answer is :->>>

H = 32KM From surface of earth

REGARDS, BRAINLY EXPERT

Answer 2

We know that gravity at any height is given as=>

g’ = g (1 - 2h/R) —[1]

Decrease by 1% implies that g’ = 99/100g

Substitute In 1,we get

99/100g = g (1 - 2h/R)

99/100 = 1 - 2h/R

2h/R = 1 - 99/100

2h/R = 1/100

h = R/200

h = 6400/200 (R = 6400KM)

Answer is :->>>

H = 32KM From surface of earth