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viktelen [127]
2 years ago
12

How high must you lift a 25 Newton book for it to have the same increase in potential energy as a 20 Newton book that was lifted

to 0.5 meters?
Physics
1 answer:
Annette [7]2 years ago
4 0

Given :

An object with weight 20 N was lifted to 0.5 meters.

To Find :

How high must you lift a 25 Newton book for it to have the same increase in potential energy as the given book.

Solution :

Since both have same potential energy :

P.E_2 = P.E_1\\\\W_2h_2 = W_1h_1

Putting all given values in above equation :

25h_2 = 20\times 0.5\\\\h_2 = \dfrac{20\times 0.5}{25}\\\\h_2 = 0.4\ m

Therefore, book with same potential energy is at a height of 0.4 m.

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