Advertisements
Advertisements
प्रश्न
Write down a relation expressing the mechanical advantage of a lever.
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?
State the principle of a lever?
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?
Which type of levers have mechanical advantage always more than 1? Give reasons.
The following belong to which class of lever?
An oar of a boat
The following belong to which class of lever?
A pair of scissors
The following belong to which class of lever?
Wheelbarrow
The following are an example of levers. State the class of lever to which each one belongs giving the relative positions of Load (L), Effort (E), Fulcrum (F):
(i) Scissors (ii) Sugar tongs (iii) Nutcracker (iv) Pliers.
The diagram shows the use of a lever.
- State the principle of moments as applied to the above lever.
- Which class of lever is this? Give an example of this class of lever.
- If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.
A lever is used to multiply the force.
