A body is under the action of three forces vecF_(1),vecF_(2) and vecF_(3). In which case the body cannot undergo angular acceleration ?

A body is under the action of three forces vecF_(1),vecF_(2) and vecF_

1.	A body is under the action of three forces vecF_(1),vecF_(2) and vecF_(3). In which case the body cannot undergo angular acceleration ?
Answer» `vec(F_(1)), vec(F_(2)) and vec(F_(3))` are concurrent `vec(F_(1))+vec(F_(2))+vec(F_(3))=0` `vec(F_(1)),vec(F_(2))` is parallel to `vec(F_(3))` but the three FORCES are not concurrent `vec(F_(1)) and vec(F_(2))` act at the same POINT but `vec(F_(3))` acts at different point. Answer :A