Answer: 60.16J
Explanation:
The following information can be gotten from the question:
Mass, m = 15.8kg
Length, l = 1.85m
θ = 37.8°
g = 9.8m/s
Potential energy = mgh
= mgh(1 - cos θ)
= 15.8 × 9.8 × 1.85 × (1 - cos 37.8°)
= 286.454 × (1 - 0.79)
= 286.454 × 0.21
= 60.16J
Therefore, the potential energy is 60.16J.
