A carpenter lifts a 20kg piece of wood to his shoulder 1.5m above the ground. He then sets the wood on his truck at 1.0 m above the ground and makes his delivery going 10 m/s
What is the wood's potential energy on the carpenter's shoulder?
To calculate the potential energy of the wood on the carpenter's shoulder, we can use the equation:
Potential Energy = mass * acceleration due to gravity * height
Given:
mass (m) = 20 kg
acceleration due to gravity (g) = 9.8 m/s^2
height (h) = 1.5 m
Potential Energy = 20 kg * 9.8 m/s^2 * 1.5 m
Potential Energy = 294 Joules
Therefore, the wood's potential energy on the carpenter's shoulder is 294 Joules.