If a person is pushing a box inside a moving train with a force F , the work done in the…

Physics · JEE Advanced · NTA Exams — Work, Energy and Power

If a person is pushing a box inside a moving train with a force \(\bar{F}\), the work done in the frame of the earth will be:

\(\bar{F} \cdot \bar{S}_{0}\)
\(\bar{F} . \bar{s}\)
\(\bar{F},\left(\vec{s}+\vec{s}_{0}\right)\)
Zero
(where \(\bar{s}\) is the displacement of the box in the train and \(\vec{s}_{0}\) is the displacement of the train relative to the ground.)

Answer

(C) F , ( s + s _ 0 )

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