point O = point( 0 [ m ], 0 [ m ], 0 [ m ] );
node node1 = nodePoint( O );
function function1(x [m])=0.5[1/m]*#x*#x;
line line1 = functionX( node1, function1, lengthLine = 4 [ m ], lineN = 28 );
point point2 = point( 2 [ m ], 2 [ m ], 0 [ m ] );
body Ground = body( color = RGB( 229, 229, 229 ) );
MIP MIP1 = massPoint( point2, 2 [ kg ] );
body ring = body( color = RGB( 255, 153, 153 ) );
joint joint1 = contactPointLine( point2, line1 );
gravity gravity1 = parallel( reverse( projectY ) );
sensor Otvet = jointForce( force:, ring, point2, projectY, joint1, fixing = lock: );
sensor sensor1 = bodyDisplacement( Ground, O, projectX, ring, point2 );
event event1 = reformsBySensor( list( stop(  ) ), sensor1, 0[m] );
sensor Rel_error = abs((Otvet-5*2[kg]*9.81[m/s2])/(5*2[kg]*9.81[m/s2]));

/\///////////////////////////////////////////////////////////////////////////////////
/\   Object Attachments
body Ground < (line1 );
body ring < (point2, MIP1 );

/\///////////////////////////////////////////////////////////////////////////////////
/\   Immovable body ;
set ground = Ground;

/\///////////////////////////////////////////////////////////////////////////////////
/\   Units of Measurement;
set units = SI;