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Work and Energy — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceWork and Energy2 Marks
Question
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
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Answer

The work done against gravity is zero when a body is moved horizontally along a frictionless surface because force of gravity acts perpendicular to the direction of motion.

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