Rankers Physics
Topic: Work Energy and Power
Subtopic: Principal of Conservation of Energy

For a body of mass 1 kg U-x graph is shown in If the body is released from rest at x = 2m, then its speed when it crosses x = 5m is Image related to
2 √2 ms–1
1 ms–1
2 ms–1
4 ms–1

Solution:

From Principal of Conservation of Energy

Ui + Ki = Uf + Kf

10 +0 = 2 + ½v²

⇒ v ² = 16 ⇒ v = 4 m/s

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