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प्रश्न
Write down a relation expressing the mechanical advantage of a lever.
Write the expression for the mechanical advantage of a lever.
Write a relation expressing the mechanical advantage of a lever.
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उत्तर
M.A. of a lever = `"Load"/"Effort"="Effort arm"/ "Load arm"`
This is the expression of the mechanical advantage of a lever.
संबंधित प्रश्न
Which class of lever will always have MA > 1 and why?
Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in such a lever?
A lever of length 9 cm has its load arm 5 cm long and the effort arm is 9 cm long.
- To which class does it belong?
- Draw a diagram of the lever showing the position of fulcrum F and directions of both the load L and effort E.
- What is the mechanical advantage and velocity ratio if the efficiency is 100%?
- What will be the mechanical advantage and velocity ratio if the efficiency becomes 50%?
Which type of levers have mechanical advantage always more than 1? Give reasons.
The following belong to which class of lever?
A see-saw
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
Sugar tongs
The following belong to which class of lever?
Fore-arm
Draw a labelled sketch of a second class lever. Give one example of such a lever.
State the types (or kinds) of lever, and give two examples of each kind.
