Recent content by ncrenwick28

Ok thanks everyone. my radius of the arc is 0.54 metres. so if the applied torque was 150N that gives me 14.1W. Correct? Cheers Nick

Hi Jack. Thanks for your help. I think i may have worked it out, or at least an average power as the velocity of the pedals vary. I measured the degree displacement of the pedals and converted to radians, then worked out how many radians per second (angular velocity)based on 23rpm (one rpm...

Anyone have any idea? I'm guessing the extra power required by the machines motor to overcome the participants force applied would equal the participants power output, however the power output from the machine is unknown.

Oh ok that makes sense. Do you know how i would be able to calculate the power (W) being done by the test subject then? Nick

Thankyou Svein. I have seen this calculation but am a bit confused. The machines motor is actually moving the pedals not the subjects so therefore should distance be an integral part of the equation? If so, would i use the distance from the load cell the the pivot point ( a constant 0.54m) or...

Hello. I am not an engineer but would really appreciate some help with a calculation for my PhD in biomedical sciences. I have a new exercise ergometer (see picture) and have been able to obtain the force applied (Newtons) to the load cells located underneath each foot pedal at 1hz. A motor...