Per NCERT, a SIMPLE MACHINE — like a pulley, inclined plane, or lever — does which of the following?
AMakes a task EASIER by changing the magnitude or direction of the applied force — though the TOTAL work required cannot be reduced
BReduces the total work needed for a task
CCreates energy out of nothing
DMakes the task slower
Answer & Solution
Correct answer: A. Makes a task EASIER by changing the magnitude or direction of the applied force — though the TOTAL work required cannot be reduced
Per NCERT §7.6, simple machines change force magnitude/direction but the total work required is unchanged (energy conservation). The other options violate physics.
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