Advertisements
Advertisements
प्रश्न
Give three examples for leavers of 1st order.
Advertisements
उत्तर
Levers of 1st order:
(i) Railway signal
(ii) Handle of water pump
(iii) Motor car foot brake
(iv) Nail cutter
संबंधित प्रश्न
State the principle of a lever?
Write down a relation expressing the mechanical advantage 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?
Give three examples for leavers of second order.
The following belong to which class of lever?
The Physical balance
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
A fire tongs
Draw a labelled sketch of a second class lever. Give one example of such a lever.
In the following diagram of a wheelbarrow, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows.
What class of lever is it? Give one more example of the same class of lever.
A crowbar of length 100 cm is used to lift a load of 5 kgf. It has its fulcrum at a distance of 20 cm from the load. Calculate:
(i) the mechanical advantage of a crowbar and,
(ii) the effort applied at the other end.
