Q.2.12. The torque or turning effect of force about a given point is given by rxF where r is the vector from the given point to the point of application of F. Consider a force F =-3 î + ĵ +5 ḵ (newton) acting on the point 7 î + 3 ĵ +ḵ (m). What is the torque in Nm about the origin?