AIPMT PRELIMS2003Physics-Mechanics
AIPMT PRELIMS 2003 Physics Elasticity MCQ Question
Type: MCQ-numerical-Easy-Class 11
When a long spring is stretched by 2 cm, its potential energy is U. If the spring is stretched by 10 cm, the potential energy stored in it will be :
A
U/5
B
5 U
C
10 U
D
25 U
Correct Answer
Option D
Detailed Explanation
The potential energy stored in a spring is proportional to the square of the extension (U ∝ x²). Therefore, if the extension is increased by a factor of 5, the energy increases by a factor of 25.
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