a box weighs 12kg at a height of 3 m. what is its potential energy?
A. 352.8 J
B. 35.28 J
C. 3.528 J
D. 3.527 J
A. 352.8 J
B. 35.28 J
C. 3.528 J
D. 3.527 J
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Answers & Comments
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 PE
PE = mgh
PE = (12 kg)(9.8 m/s²)(3 m)
Therefore, the answer is A. 352.8 J