Answer :
Gravitational Potential Energy = weight x height
for 1 meter:
GPE = 5 x 1
= 5N
for 1.5 metres:
GPE = 5 x 1.5
= 7.5N
for 2 metres:
GPE = 5 x 2
= 10N
for 1 meter:
GPE = 5 x 1
= 5N
for 1.5 metres:
GPE = 5 x 1.5
= 7.5N
for 2 metres:
GPE = 5 x 2
= 10N