Question
Asked Mar 25, 2019

The second floor of a house is 6 m above the street level. 

How much work is required to lift a 270-kg refrigerator to the second-story level? Express your answer to two significant figures and include the appropriate units.  

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Expert Answer

Step 1

According to work energy theorem, the work done in raising an object is equal to the change in the gravitational potential energy.

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Step 2

Here, Pf is the final potential energy, Pi is the initial potential energy, m is the mass, h is the height and g is the...

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Physics

Work,Power and Energy

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