Answer:
320J
Step-by-step explanation:
Given Weight = 64
Mass = Weight / Acc. due to gravity
M = 64/10
M = 6.4kg
Potential Energy = mass * acc. Due to gravity * height
PE = MGh
PE = (6.4)(10)(5)
PE = 320
Note: Acceleration due to gravity is
10 m/s2 on earth (rounded off)