The potential energy of an object is given by
where:
PE = potential energy
m = mass
g = acceleration due to gravity = 9.8 m/s²
h = height
PE = mgh
PE = (20 kg)(9.8 m/s²)(4 m)
Therefore, the potential energy of the wood is 784 J.
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The potential energy of an object is given by
where:
PE = potential energy
m = mass
g = acceleration due to gravity = 9.8 m/s²
h = height
Solving for the potential energy
PE = mgh
PE = (20 kg)(9.8 m/s²)(4 m)
Therefore, the potential energy of the wood is 784 J.