Advertisements
Advertisements
प्रश्न
The diagram below shows a lever in use.
(i) To which class of lever does it belong?
(ii) If FA = 40 cm, AB = 60 cm, then find the mechanical advantage of the lever.
Advertisements
उत्तर
(i) Class 2 lever.
(ii) We know,
L × LA = E × EA.
M.A. =`"L"/"E"=("EA")/("LA")`
= `100/40`
= 2.5
संबंधित प्रश्न
The diagram below shows a lever in use:
- To which class of levers does it belong?
- Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the 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?
The lever for which the mechanical advantage is less than 1 has :
Give three examples for leavers of the third order.
The following belong to which class of lever?
A see-saw
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
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.
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
