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  2. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    The graphs below show the angle domain equations for a constant rod length (6.0") and various values of half stroke (1.8", 2.0", 2.2"). Note in the graphs that L is rod length l {\displaystyle l} and R is half stroke. r {\displaystyle r} .

  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. Hooke's law - Wikipedia

    en.wikipedia.org/wiki/Hooke's_law

    In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.

  5. Equations of motion - Wikipedia

    en.wikipedia.org/wiki/Equations_of_motion

    Trajectory of a particle with initial position vector r 0 and velocity v 0, subject to constant acceleration a, all three quantities in any direction, and the position r(t) and velocity v(t) after time t. The initial position, initial velocity, and acceleration vectors need not be collinear, and the equations of motion take an almost identical ...

  6. Motion graphs and derivatives - Wikipedia

    en.wikipedia.org/wiki/Motion_graphs_and_derivatives

    Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object. (Velocity is on the y-axis and time on the x-axis. Multiplying the velocity by the time, the time cancels out, and only displacement remains.)

  7. Mean speed theorem - Wikipedia

    en.wikipedia.org/wiki/Mean_speed_theorem

    Almost immediately, Giovanni di Casale and Nicole Oresme found how to represent the results by geometrical graphs, introducing the connection between geometry and the physical world that became a second characteristic habit of Western thought ... The theorem is a special case of the more general kinematics equations for uniform acceleration.

  8. More than half of registered voters have already cast their ...

    www.aol.com/more-half-registered-voters-already...

    While Election Day is finally here, more than 83 million people have already cast their ballots. Election Day was trending on the busy side, with roughly half of the 161.42 million registered ...

  9. Motor constants - Wikipedia

    en.wikipedia.org/wiki/Motor_constants

    is the torque produced divided by armature current. [10] It can be calculated from the motor velocity constant . = = = where is the armature current of the machine (SI unit: ampere).