NEET Physics Work-Energy Theorem MCQ Question
A block of mass 2 kg is initially at rest on a frictionless horizontal surface. A variable force F(x) = 3x N is applied to it, where x is the displacement in meters. What is the work done by this force when the block is displaced from x = 0 to x = 4 m?
32 J
24 J
16 J
48 J
Correct Answer
Detailed Explanation
The work-energy theorem states that the work done by a force is equal to the change in kinetic energy. Here, work done W = , which evaluates to from 0 to 4, resulting in 32 J.
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