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  2. Prony brake - Wikipedia

    en.wikipedia.org/wiki/Prony_brake

    The torque is then related to the lever length, shaft diameter and measured force. The device is generally used over a range of engine speeds to obtain power and torque curves for the engine, since there is a non-linear relationship between torque and engine speed for most engine types. Power output in SI units may be calculated as follows:

  3. Torque - Wikipedia

    en.wikipedia.org/wiki/Torque

    The horizontal axis shows the rotational speed (in rpm) that the crankshaft is turning, and the vertical axis is the torque (in newton-metres) that the engine is capable of providing at that speed. Torque forms part of the basic specification of an engine: the power output of an engine is expressed as its torque multiplied by the angular speed ...

  4. Euler's equations (rigid body dynamics) - Wikipedia

    en.wikipedia.org/wiki/Euler's_equations_(rigid...

    Torque-free precessions are non-trivial solution for the situation where the torque on the right hand side is zero. When I is not constant in the external reference frame (i.e. the body is moving and its inertia tensor is not constantly diagonal) then I cannot be pulled through the derivative operator acting on L.

  5. Orders of magnitude (torque) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(torque)

    Torque when one end of a 1 m long moment arm is acted upon by a force of 1 N. 10^2: 108 N⋅m to 149 N⋅m: 80 lb⋅ft to 110 lb⋅ft: Torque to which most lug nuts are tightened. [1] 10^2: 881 N⋅m: 650 lb⋅ft: Torque at the crankshaft of a Dodge Charger SRT HellCat. [2] 10^4 13,000 N⋅m Example 2 MW wind turbine, generator side. [3] 10^6 ...

  6. Couple (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Couple_(mechanics)

    The SI unit for the torque of the couple is newton metre. If the two forces are F and −F, then the magnitude of the torque is given by the following formula: = where is the moment of couple; F is the magnitude of the force; d is the perpendicular distance (moment) between the two parallel forces

  7. Newton's laws of motion - Wikipedia

    en.wikipedia.org/wiki/Newton's_laws_of_motion

    The relation between matter distribution and spacetime curvature is given by the Einstein field equations, which require tensor calculus to express. [ 84 ] : 43 [ 91 ] The Newtonian theory of gravity is a good approximation to the predictions of general relativity when gravitational effects are weak and objects are moving slowly compared to the ...

  8. Tractive effort - Wikipedia

    en.wikipedia.org/wiki/Tractive_effort

    The term tractive effort is often qualified as starting tractive effort, continuous tractive effort and maximum tractive effort.These terms apply to different operating conditions, but are related by common mechanical factors: input torque to the driving wheels, the wheel diameter, coefficient of friction (μ) between the driving wheels and supporting surface, and the weight applied to the ...

  9. Net force - Wikipedia

    en.wikipedia.org/wiki/Net_force

    The line of action can be selected arbitrarily, but the additional pure torque depends on this choice. In a special case, it is possible to find such line of action that this additional torque is zero. The resultant force and torque can be determined for any configuration of forces. However, an interesting special case is a torque-free resultant.