We know that, potential energy due to gravitation is given by

P.E. = mgh

where, m is the mass,

g is the gravity

h is the height

Given, m = 5 kg, P.E. = 490 joules, g = 9.8 m/s^2

490 = 9.8 x 5 x h

h = 490/(9.8 x 5)

h = 490/49

h = 10 m

Hence, the body should be raised to the height of 10 m