When two different stones of masses 1 kg and 2 kg are taken to the same heights, then:
The potential energy of the stone of mass 2 kg is more than that of the 1 kg stone.
Potential energy is mathematically represented by the formula,
P.E. = mgh
where m is the mass,
g is acceleration due to gravity and
h is the height in meters(above the ground).
Potential energy is directly proportional to the mass of the object. Therefore, the stone of mass 2 kg would have higher potential energy than a stone of mass 1 kg.