Question

find at what depth,acc. due to gravity reduce to one third​

Answer 1

Explanation:

Correct option is

D

4.8×10

6

m

Variation of g outside the earth

g

1

=g(1−

R

2h

)

g

1

=10(1−

6400

2×1600

)

g

1

=5m/s

2

Variation of g inside the earth

g

11

=g(1−

R

h

)

Now, it is given that,

g

11

=

2

g

1

2.5m/s

2

=10(1−

6400

h

)

4

1

=1−

6400

h

h=

4

3

×6400 Km

h=4.8×10

6

m

Answer 2

Answer:

Hey!! Ur answer:

At 4,266.67 km depth,acceleration due to gravity reduce to one third.

Explanation:

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