The torque wrench ABC is used to measure the moment or torqu

The torque wrench ABC is used to measure the moment or torque applied to a bolt when the bolt is located at A and a force is applied to the handle at C. The mechanic reads the torque on the scale at B. (Figure 1) If an extension AO of length d is used on the wrench, determine the required scale reading if the desired torque on the bolt at O is to be M. Express your answer in terms of the variables d, l, and M.

Solution

From the problem

moment or torque (M)=Force x perpendicular distance=(l+d) F