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Sanchit Gupta Grade: 12

A uniform cord of length 25 cm and mass 15 g is initially stuck to a ceiling. Later, it hangs vertically from the ceiling with only one end still stuck. What is the change in the gravitational Potential Energy of the cord with this change in orientation ? 

8 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points

Dear Sanchit

Given cord is uniform so here in this case we should only see how much center of mass of cord fall .

length of the cord is 25 cm,its center of mass is the middle point of the cord

so change in gravitational potential energy= 15*g*(25/2)

                                                            =1875 X 10-5    N


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8 years ago
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