A box has a mass of 5.8kg. The box is lifted from the garage floor and placed on a shelf. If the box gains 145J of Potential Energy, how high is the shelf?
Gravity on Earth is 9.8 m/s2
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5
Answer:
If h be the required height , the potential energy PE=mgh
or h=PE/mg=
5.8×10
145
=2.5m
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A box has a mass of 5.8kg. The box is lifted from the garage floor and placed on a shelf. If the box gains 145J of Potential Energy, how high is the shelf?
Gravity on Earth is 9.8 m/s2
Answer:
If h be the required height , the potential energy PE=mgh
h=PE/mg
=145/(5.8*9.8)
=145*56.84
=2.551
=2.5(approximately)
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