Loading...
Assertion: Torque is an axial vector. Reason: Force is a polar vector.
A: Torque on a body can be zero even if there is a net force on it. R: Torque and force on a body are always perpendicular.
A: A couple does not exert a net force even though it exerts a torque. R: Couple is a pair of two forces with equal magnitude but opposite directions acting simultaneously on a body in different lines of action.
A: To unscrew a rusted nut, we need a pipe wrench of longer arm. R: Wrench with longer arm reduces the force applied on arm.
(a) What are the differences between the centre of gravity and the centre of mass? (b) A square plate of mass 120 g and edge 5.0 cm rotates about one of edges. If it has a uniform angular acceleration of 0.2rad/s², what torque acts on the plate?
© 2026 PadhAiPro. This question is provided for educational purposes.
