Question

I want to tighten a bolt to a torque of 1.0 newton-meter, but I don't have a torque wrench. I do have an ordinary wrench, a ruler, and a 1.0 kg mass tied to a string. How can I apply the correct torque to the bolt? (Don't forget the factor of g = 9.8 m/s**2.)

Answer 1

Solutions In the absence of torque wrench a simple wrench can be used by attacking the suler with the simple wrench and using the gravitati. -onal pull on the mass as the force applied on the ruler. Only thing we need find is the arm length or in other words distance from the wrench the mass has to be tied, Let us see the problem pictographically, simple wrench ruler bolt tellus mass Tosque applied by the mass = - ngxx 1x9.8xx.m 9.8x Nm Required to tosque - INM Soy x 0.102 ry x= 10.2 cu So, the required fosque can be applied by using the mass that has to be led at at distance of 10.2cm from the bolt-