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#1 2017-11-02 07:24:51

shakeel123
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When a body falls, its height decreases also its potential energy...

ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Physics Work and Energy 3

Question:
When a body falls, its height decreases also its potential energy decreases. The expression is?

Option A):
mg(h₁²  - h₂²) = 1/2 m ( V₂² – V₁²)
Option B):
mg(h₂ - h₁) = 1/2 m ( V₁² – V₂²)
Option C):
h₁ - h₂ = 1/2 m ( V₁² – V₂²)
Option D):
mg(h₁ - h₂) = 1/2 m (V₂² – V₁²)

Correct Answer is Option D):
mg(h₁ - h₂) = 1/2 m (V₂² – V₁²)


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2017-11-02 07:24:51

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