An exercise machine having a beam pivoted off center, with {HEAD ~ a weight} movable along the beam under control of {TAIL ~ a motor} 
An exercise machine having a beam pivoted off center , with { HEAD ~ a weight } movable along the beam under control of { TAIL ~ a motor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL