Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Effective moving mass (kg)

Required number input.

Acceleration magnitude (m/s²)

Required number input.

Estimate an actuator proof mass's inertial force magnitude from effective moving mass and acceleration magnitude. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Inertial force magnitude (N)

The resulting inertial force magnitude returned as a number.

• Haptic force and resonance estimates depend on actuator type, moving mass, drive waveform, mounting, load, damping, temperature, and enclosure mechanics. Perceived intensity also varies with frequency, contact, and the user.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Haptic Resonant Frequency

  Undamped natural frequency of a single-degree-of-freedom haptic actuator from effective stiffness and moving mass.

• MEMS Resonant Frequency

  Find the undamped natural frequency of a single-degree-of-freedom MEMS proof mass from effective stiffness and effective mass.

• Common-Mode Choke Impedance

  Estimate one winding's series RL impedance magnitude at frequency f as √[R²+(2πfL)²]. Enter the effective common-mode inductance and resistance at the operating point; real choke impedance also includes core loss, capacitance, and self-resonance.