For a particle moving along the x-axis

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

For a particle moving along the x-axis, its potential energy varies with position according to U(x)=10−3xU(x) = 10 - 3x (in joules, with xx in meters). As the particle moves from x=1 mx = 1\,\text{m} to x=4 mx = 4\,\text{m}, which of the following correctly describes the change in potential energy of the system? (a) ΔU=+9 J\Delta U = +9\,\text{J}, indicating energy was added to the system (b) ΔU=−9 J\Delta U = -9\,\text{J}, indicating energy was released by the system (c) ΔU=−3 J\Delta U = -3\,\text{J}, indicating energy was released by the system (d) ΔU=−9 J\Delta U = -9\,\text{J}, indicating energy was added to the system

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