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प्रश्न
The lever for which the mechanical advantage is less than 1 has :
पर्याय
Fulcrum at mid-point between load and effort.
Load between effort and fulcrum.
Effort between fulcrum and load.
Load and effort acting at the same point.
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उत्तर
Effort between fulcrum and load.
Reason:
Levers, for which the mechanical advantage is less than 1, always have the effort arm shorter than the load arm.
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संबंधित प्रश्न
Which class of lever will always have MA > 1 and why?
What is a lever?
A man uses a crowbar of length 1.5 m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance 1 m from his hand.
- Draw a diagram of the arrangement showing the fulcrum (F), load (L) and effort (E) with their directions.
- State the kind of lever.
- Calculate:
- load arm,
- effort arm,
- mechanical advantage and
- the effort needed.
Give three examples for leavers of 1st order.
Give three examples for leavers of second order.
The following belong to which class of lever?
A pair of scissors
The following belong to which class of lever?
Knife
Draw a labelled sketch of a second class lever. Give one example of such a lever.
When we want to use a machine as a force multiplier, which class of lever should we preferably use? Give a simple diagram of such a lever.
What is a lever?
