# What is r in torque equation?

## What is r in torque equation?

r is the lever arm – the distance between the pivot point and the point of force application; F is the force acting on the object; θ is the angle between the force vector and lever arm. Typically, it is equal to 90°; and.

## How do you calculate torque from axial force?

Axial Force Ff, by using Equation(1) Ff=0.7× y×As 0.7×112×20.1 1576[kgf] A bolt is tightened by torque, torque inclination, rotating angle, stretch measurement and other methods. The torque method is widely used due to its simplicity and convenience.

What is axial torque?

Axial Force and Torque For axial force, tension is defined to be positive in magnitude and compression is defined to be negative. For axial torque, Right Hand Rule is used for the sign convention. A positive axial torque vector points in the positive outward normal direction at the boundary element.

What is K factor in bolt torque?

The K factor is used to account for the energy lost to friction and other factors during the tightening process. The generally accepted K factors for this calculation are: 0.20 for assemblies with dry threads (no lubrication) 0.15 for assemblies with lubricated threads.

### Why is torque r cross F?

Because torque is a kind of moment. So when u apply a force in outer most layer of a shaft or twist a shaft with one end fixed, the force you given multiplied by the distance from out most layer to centre of the shaft. So torque is equal to force x perpendicular distance.

### How do you calculate torque from force?

The equation, Force = Torque ÷ [Length × sin (Angle)], converts torque into force. In the equation, Angle is the angle at which the force acts on the lever arm, where 90 degrees signifies direct application.

How is RPM related to torque?

Mathematically, horsepower equals torque multiplied by rpm. H = T x rpm/5252, where H is horsepower, T is pound-feet, rpm is how fast the engine is spinning, and 5252 is a constant that makes the units jibe. So, to make more power an engine needs to generate more torque, operate at higher rpm, or both.