Question

4.A planet X has its mass as 6x 1035 kg and the radius as 3.2 x 1011 m Find the ratio of acceleration due to gravity of the planet x to the acceleration due to gravity of the Earth.

Answer 1

.ANSWER

q

′

=

R

2

GM

=

(4ve)

2

G×2me

=

8

1

ve

2

Gme

=

8

g

To find 4 times the acceleration due to gravity =4×

8

1

g=

2

g

=

2

10

=5m/s

2

Hence, the answer is 5m/s

2

.

Answer 2

5m/s^2

=

(4ve)

2

G×2me

=

8

1

ve

2

Gme

=

8

g

To find 4 times the acceleration due to gravity =4×

8

1

g=

2

g

=

2

10

=5m/s

2

Hence, the answer is 5m/s

2

.