A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 1.89 104 N in the supporting cable produces a torque with respect to point O. (Let L = 39.3 m.)

Question

A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 1.89  104 N in the supporting cable produces a torque with respect to point O. (Let L = 39.3 m.)

(b) Find the torque.

Elena · Answer

torque = force•arm of the force = =1.89•10^4•39.3=7.43•10^5 N•m