How Do You Calculate Torque By Feet Per Pound?
Torque is an influence that changes the rotational motion of an object. The international unit of torque is the Newton-meter (N*m), but many people prefer to use the foot-pound (ft*lb) because the units of feet and pounds are more familiar in the United States and Britain. You can see torque in action in familiar situations like using a wrench or ratchet to tighten a bolt. The length of the ratchet is called the lever arm, and it is pushed with a certain degree of force to create torque. Torque that is measured and calculated in Newton-meters is easily converted to foot-pounds. Write down the formula for calculating torque: Torque = Force applied x length of lever arm. Calculate the torque for the problem you are trying to solve. For example, imagine a problem that asks how many foot-pounds of torque result when a force of 150 N is applied to a ratchet with a 0.3-m lever arm. Torque = 150 N x 0.3 m = 45 N*m Multiply your answer from the previous step by 0.738 to convert Newton-meters t