Answer:
300 J
Step-by-step explanation:
The gravitational potential energy of the performer is given by:
![U=mgh](https://img.qammunity.org/2020/formulas/physics/middle-school/awmf2k5psn5kpap0fanr9ig88pgdkkr3bv.png)
where
(mg) is the weight of the performer, equal to the product between mass (m) and gravitational acceleration (g)
h is the height of the performer above the ground
In this problem, we have
(mg) = 60.0 N
h = 5.0 m
Substituting into the formula, we find
![U=(60.0 N)(5.0 m)=300 J](https://img.qammunity.org/2020/formulas/physics/middle-school/wrve9iifhiboclok6dfly103zfzhlnysah.png)