ICSE Class 10 Physics 2015 Solved Paper

Question : 35 of 74

Marks: +1, -0

A nut is opened by a wrench of length

20 {\cm}

. If the least force required is

2 {\N}

, find the moment of force needed to loosen the nut.

Solution:

\;\;\text " Given : Force "\;=2 {\N}, d=20 {\cm} \;\text ". "\;=0.2 {\m} \;\text ". "\;

\;\;\text " Moment of force "\;=\;\text " Force "\; × \;\text " distance "\;

\;=2 × 0.2

\;=0.4 {\Nm}

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