A heavy iron rod is used to lift a large stone from the soil. Which statement correctly describes why this…
A heavy iron rod is used to lift a large stone from the soil. Which statement correctly describes why this iron rod acts as a simple machine?
It increases the total energy created in the system.
It allows a smaller force applied over a distance to overcome a larger load.
It converts gravitational force into magnetic force.
It eliminates friction completely between the stone and the ground.
Solution
Simple machines make work easier by multiplying force or changing its direction, allowing a smaller effort force applied over a longer distance to move a larger load.