NEET Physics Work Done by Forces MCQ Question
Consider a block attached to a spring on a smooth horizontal surface, as described in Fig. 5.7. If the block is displaced to the right by a distance x, what is the nature of the work done by the spring force?
The work done is positive because the spring force assists the displacement.
The work done is negative because the spring force opposes the displacement.
The work done is zero because the spring force is conservative.
The work done is variable and depends on the initial displacement only.
Correct Answer
Detailed Explanation
The work done by the spring force is negative because the spring force opposes the displacement, as shown by the opposing signs of F_s and x in the context provided.
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