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A force of -Fhatk actgs on O, the origin...

A force of `-Fhatk` actgs on O, the origin of the coodinate system. The torque about the point (1,-1) is

A

`F(hati-hatj)`

B

`-F(hati+hatj)`

C

`F(hati+hatj)`

D

`-F(hati-hatj)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Torque `vectau = vecrxxvecF = (hatj-hati)xx(Fhatk)=-F(hati+hatj)`
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