Q

An ideal inclined plane is 20 m long and raises a load through a vertical height of 4 m. Compared to lifting the load straight up, the effort required to move the load up the plane is ________.

RRB Group D 21 Aug, 2026 (12:45 PM - 2:15 PM) 2026
✓ Answer: A One-fifth of the load
The correct choice is One-fifth of the load. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.
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