Out of the following set of forces, the resultant of which cannot be zero?
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a
10, 10, 10
b
10, 10, 20
c
10, 20, 20
d
10, 20, 40
answer is D.
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Detailed Solution
In all the options except D, the sum of two forces is greater or equal to the remaining forceHowever, For option D, 10+20=3030<40Hence, the resultant can not be zero for option D.