The gravitational potential difference Try Yourself
37. The ratio of the escape speed from two planets is 3 : 4 and the ratio of their masses
9 : 16. What is the ratio of their radii?
VI MI R
Hint : Take —
38. What will be the escape speed from earth if the mass of earth is doubled keeping the same
size?
26M
Hint : Use v =
EXERCISE 8.3
[Gravitational potential, Gravitational Potential energy, Escape velocity]
gravitational potential difference between the surface of a planet and a point 20 m above is 16 J/kg. The
one in moving a 2 kg mass by 8 m on a slope of 600 from the horizontal is
(2) 5.55 J
(4) 27.7 J
ka are brought from infinity to the vertices of an equilateral triangle
