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Horsepower calculator

It refer to the amount of power that an engine produces

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Velocity Ratio Calculator in Gear

The ratio between the angular velocity of the follower to angular velocity of driver gear

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Coefficient of Drag Calculator

Coefficient of Drag

Drag Coefficient of Different Shape
Drag Coefficient of Different Shape

In fluid dynamics, the coefficient of drag is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag. The drag coefficient is always associated with a particular surface area – WIKIPEDIA