21. Where " g " is the acceleration due to gravity and T d is the duration of signal above threshold. 22. Where g is the acceleration due to gravity , I is the second moment of area of the beam cross section. 23. I was only thinking of acceleration due to the elevator's motor, but there's also acceleration due to gravity to consider. 24. Where m is the mass, l is the characteristic length, g is the acceleration due to gravity and v is the velocity. 25. Where u _ * is the friction velocity and g is the acceleration due to gravity ( typically the Standard gravity ). 26. The Bush or its pieces move by crawling while experiencing acceleration due to gravity or thrust, or by flying in low gravity environments. 27. :Just a comment, I suppose I just assumed that the user was referring to acceleration due to gravity in his / her question. 28. Where is the density of the fluid, is the acceleration due to gravity , and is the volume of fluid directly above the curved surface. 29. See acceleration due to gravity for more explicit info on this question . & mdash; Kieff 00 : 07, 18 January 2007 ( UTC) 30. :FYI,'g'does not stand for velocity, but acceleration due to gravity at sea level . talk ) 07 : 18, 28 April 2013 ( UTC)