Advertisements
Advertisements
प्रश्न
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.
उत्तर
Class III lever.
APPEARS IN
संबंधित प्रश्न
shows a nut cracker name the class of lever ?
The lever for which the mechanical advantage is less than 1 has :
Class II levers are designed to have ______.
A 4 m long rod of negligible weight is to be balanced about a point 125 cm from one end and a load of 18 kgf is suspended at a point 60 cm from the support on the shorter arm.
- If a weight W is placed at a distance of 250 cm from the support on the longer arm to balance the rod, find W.
- If a weight 5 kgf is kept to balance the rod, find its position.
- To which class of lever does it belong?
Fig 3.17 below shows a lever in use.
(a) To which class of lever does it belong?
(b) If FA = 80 cm, AB = 20 cm, find its mechanical advantage.
(c) Calculate the value of E.
Give three examples for leavers of second order.
The following belong to which class of lever?
Wheelbarrow
The following belong to which class of lever?
Knife
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.
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.
