Question

The ratio of escape velocity of a 50 kg massive body to 100 kg massive body is
(a)1:2
(b)2:2
(c) incomplete information
(correct answer is b why?)

​

Answer 1

Answer:

ANSWER

Escape velocity is given by formula

v

e

=

R

2GM

Now gravitational potential energy

U

G

=

R

−GMm

U

G

=−

2

1

mv

e

2

U

G

=−

2

1×100

2

U

G

=−5000J

Thus gravitational potential energy of the planet is −5kJ.