Advertisements
Advertisements
प्रश्न
Write down a relation expressing the mechanical advantage of a lever.
Advertisements
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
State the principle of a lever?
Class II levers are designed to have ______.
Give three examples for leavers of second order.
Give three examples for leavers of the third order.
Which class of lever found in the human body is being used by a boy when he holds a load on the palm of his hand.
Which class of lever found in the human body is being used by a boy when he raises the weight of his body on his toes?
The following belong to which class of lever?
A claw-hammer
Shears, used for cutting metals and scissors used for cutting clothes are both examples of levers of the first order. However, whereas the shears always have short blades and long handles, the scissors often have blades much longer than the handles. Explain, why this is so?
Draw a labelled sketch of a second class lever. Give one example of such a lever.
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.
