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Simple Machines - class-X
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QuestionClick to flip
In a single movable pulley, if the effort moves by a distance $x$ upwards, by what height is the load raised?
AnswerClick to flip back
A
$x/2$
💡 Explanation:
Load $L$ is attached to the movable pulley. A rope is fi xed at a point in ceiling that passes through the moveable pulley.
In order to lift the effort $E$ by $ x$ meters, the load $L$ needs to
Travel the distance of $ x/2$ meters. (The entire rope needs to be pulled by $E$ for a distance of $ x$)
Now, Velocity Ratio equals (Distance traveled by $E$) divided by (Distance traveled by $L$)
So it becomes : $ x/( x/2)$. This equals to 2
Since it is a ratio. it has no units of measurement.