Question

In a lever of class-I
a)the fulcrum lies between the load and the effort
b)the load lies between the fulcrum and the effort
c)the effort lies between the load and the fulcrum
d) all of the above
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Answer 1

Answer:

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Explanation:

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PHYSICS

Which of the following are correct examples of first, second and third class levers?

First class Lever Second class Lever Third class Lever

I Scissors Wheel barrow Broom

II Ice Tongs Tweezer Paper cutter

III Pliers Nut cracker Fishing rod

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ANSWER

A class I lever has the fulcrum between effort and load. In an ice tong and tweezer, effort is between fulcrum and load. Hence, they are class III lever. In scissors and pliers, fulcrum is between effort and load. Therefore they are class I levers .

A class II lever has the load between effort and fulcrum. In wheel barrow, paper cutter and nut cracker, load is between effort and fulcrum. Therefore, they are class II levers .

A class III lever has the effort between fulcrum and load. A broom and fishing rod have the effort between fulcrum and load. Therefore, they are class III levers.

Hence, in the given table, I and III are the correct examples of I, II and III class levers