[ODE] dBodyGetForce returns zero force

Patrick Enoch Hendrix_ at gmx.net
Thu Jun 28 08:59:29 MST 2007

Gravity is applied during the timestep-routine. So you do not "see" it.

On 28.06.2007, at 11:03, PKS123 wrote:

> Hi
> I am using the dBodyGetForce() function to find out the force on a  
> body
> which is in free fall.
> The function is returning a zero vector.
> I noticed from the ODE Documentation that the force accumulators  
> are set to
> zero after each time step. So, I put the function both before and  
> after the
> dWorldQuickStep() function but the value was zero in both cases.
> The Body has a mass of 100, and so the minimum force that I should be
> getting is m*g ie. 100*9.8
> But I get a zero force. Could anyone suggest what might be wrong.
> Thanks and Regards
> PKS123
> -- 
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> returns-zero-force-tf3993241.html#a11339547
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