If a number of forces are acting at a point, their resultant is given by

A) $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2}$$ B) $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2}} $$ C) $${\left( {\sum {\text{V}} } \right)^2} + {\left( {\sum {\text{H}} } \right)^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)$$ D) $$\sqrt {{{\left( {\sum {\text{V}} } \right)}^2} + {{\left( {\sum {\text{H}} } \right)}^2} + 2\left( {\sum {\text{V}} } \right)\left( {\sum {\text{H}} } \right)} $$

Answer & Solution

Correct Answer: Option B

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Jenith Kumar 6 years ago

Option b is the correct answer.. If F1 and F2 are two forces( vectors ), the resultant of them is given by, F^2=F1^2+F2^2+2F1F2 cos( theta), where (theta )is angle between them. When (theta)=0, that is F1 andF2 act in the same direction, the resultant is maximum: |F|=|F1|+|F2|.

Tennessean Mudliyar 6 years ago

Polygon Law of Forces

Spandan Ghosal 7 years ago

Explain

Yasear Syed 7 years ago

Can anyone explain

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If a number of forces are acting at a point their...

If a number of forces are acting at a point, their resultant is given by

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