Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 11
Which of the following expressions correctly represents the work done by a spring force when a block attached to it is displaced from its equilibrium position by a distance x?
A
W = -0.5 k x^2
B
W = 0.5 k x^2
C
W = -k x
D
W = k x
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, the work done by the spring force is negative when the block is displaced from the equilibrium position. This is represented by the expression W = -0.5 k x^2.
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