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Moment of concurrent forces about any po...

Moment of concurrent forces about any point is constant.
If vector sum of all concurrent forces is zero, then moment of all the forces about any point is also zero.

A

If both Accertion and Reason are true and the reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but reason is not the correct explanation of Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
If vector sum of consurrent force is zero, then all forces can be assumed a pair of two equal and opposite forces acting at one point
`F_(1) = F_(2)`

Now, if we take moment about any general point `P`, then moment of `F_(1)` is clockwire and moment of `F_(2)` (of same magnitude) is anti-clockwire. Thererfore net moment is zero.
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