ICSE Class 10 Physics 2018 Solved Paper

Question : 42 of 78

Marks: +1, -0

The direction of

20 {\kgf}

force is reversed. What is the magnitude of the resultant moment of the forces on the rod?

Solution:

On reversing the direction of

20 {\gf}

force, it now provides clockwise moment.
Thus the resultant moment of the forces on the rod

\;=120 {\gf}- {\cm}+120 {\gf}- {\cm}

\;=240 {\gf}- {\cm} \;\text " (clockwise) "\;

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