Formula for Acceleration Force Objects in Linear Motion `F_a` = `(WDeltaFPM)/(1,930t)` Enter Variables Weight of object, `W` = lbs. Change in linear speed, `DeltaFPM` = ft./min. Time period to accelerate, `t` = sec. Calculate View Result Acceleration Force, Linear Motion, `F_a` = lbs. Copy Result † Formulas for acceleration torque and acceleration force are average values only for the time period values used. Actual peak torques and peak forces to accelerate can be several order of magnitude greater than formula values for short periods of time. The shorter the acceleration time period the greater actual peak values will exceed formula values. This can be important to designers when sizing drives and drive components.