The Potential Energy of Spring NEET Questions

Physics - Work, Energy, and Power

The Potential Energy of Spring MCQ Questions


7.
A spring is stretched from its natural length by a force F. The energy stored in the spring is proportional to:
A.
F
B.
F²
C.
F/x
D.
F²/x²
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ANSWER :
B. F²
8.
If a spring of force constant k is stretched by x, then the force required is F. If the same spring is stretched by 2x, the force required is:
A.
F
B.
2F
C.
4F
D.
8F
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ANSWER :
B. 2F
9.
A block attached to a spring oscillates with an amplitude A. The total energy of the system is:
A.
½ k A²
B.
k A²
C.
¼ k A²
D.
mA²
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ANSWER :
A. ½ k A²
10.
A mass attached to a vertical spring executes SHM with amplitude A. The potential energy of the spring at maximum displacement is:
A.
k A²
B.
½ k A²
C.
¼ k A²
D.
Zero
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ANSWER :
B. ½ k A²
11.
A spring of force constant k is stretched by x and then compressed by x. The work done in both cases is:
A.
Equal
B.
More in stretching
C.
More in compression
D.
Zero
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ANSWER :
A. Equal
12.
A block attached to a horizontal ideal spring moves with simple harmonic motion. The ratio of kinetic energy to total energy at displacement x = A/2 is:
A.
1:2
B.
2:3
C.
3:4
D.
4:5
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ANSWER :
B. 2:3