Which class of lever will always have MA >1 ...

ICSE Class 10 Physics 2017 Paper

Question : 5 of 65

Marks: +1, -0

Which class of lever will always have MA

>1

and why?

Solution:

Class II lever has MA always greater than 1.

For a lever,

M A = \frac{\text{ Effort arm }}{\text{ Load arm }}

In class II lever, load lies between the fulcurm and the effort. So its effort arm is always more than the load arm. Thus its MA > 1 .

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