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Question
The following belong to which class of lever?
Nutcracker
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Solution
Second-class of lever
RELATED QUESTIONS
Write down a relation expressing the mechanical advantage of a lever.
Give three examples for leavers of 1st order.
Give three examples for leavers of second order.
The following belong to which class of lever?
A claw-hammer
Draw a labelled sketch of a second class lever. Give one example of such a lever.
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.
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?
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.
What is a first-order lever?
A lever is used to multiply the force.
