Solution is attached in the image Posted below. Hope it helps. If you have any query please comment in the comment box. 506 wheel.Radius ob Gyration Ka_(1)=0.7ft stibbness AB=1.200//Ft unstretched length:- 0.5ft# Now we have Initial wheel & spring condition.Initial _(" stretch ")=> stretched lengthunstretched length=>3.04138-0.5=>2.54138final spring condition when B aligns with the fixture poutIt took (1" th ")/(4) Revolution to reach B {:[" l.e "=(" Circumference by ")/(4)],[=>(pi D)/(4)=>(pi r)/(2)=(pi xx1)/(2)]:}r=1ft[ Radis of wheel ]# Initial potential energ y :{:[P_(i)=(1)/(2) ... See the full answer