Physics · Work, Energy and Power
Consider a system in which a particle undergoes one-dimensional motion under a conservative force F(x). The potential energy function U(x) has a maximum value U(x1) = 8 J for x < x1, a minimum value U(x2) = 0 J at x = x2, and a value U(x3) = 4 J at x = x3. If the total mechanical energy Emech = 8 J, which of the following statements is incorrect for this system?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1At x > x4 where U(x) is constant, kinetic energy is constant throughout the region.
- 2At x < x1, kinetic energy is smallest and the particle is moving at the slowest speed.✓
- 3At x = x2, kinetic energy is greatest and the particle is moving at the fastest speed.
- 4At x = x3, kinetic energy is 4 J.
Correct answer
At x < x1, kinetic energy is smallest and the particle is moving at the slowest speed.
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