check: 0.4 M a^2 w0 = 3.465e+34 (Paper 2: 3.466e34)

[Earth keeps its inertia] pear mass 10.9 lunar masses
  day at release (all attached, corotating): 11.07 h
  share of angular momentum: Moon 13.8%, pear 36.5%, Earth 49.7%
  after the pear falls back: Earth's day 6.30 h (pear returns its angular momentum)

[Earth minus Moon and pear mass] pear mass 10.9 lunar masses
  day at release (all attached, corotating): 10.27 h
  share of angular momentum: Moon 14.9%, pear 39.3%, Earth 45.8%
  after the pear falls back: Earth's day 6.38 h (pear returns its angular momentum)

slow rise over 100 Myr: radial speed 3.68e-09 m/s, sideways force 2.04e+12 N, bending stress at the base 3.83e-01 Pa

final phase over 1,000 yr: radial speed 3.68e-04 m/s, sideways force 2.04e+17 N, bending stress at the base 3.83e+04 Pa
=== how heavy may the pear be for the tip still to reach the line? ===
pear   0.0 lunar masses: day  7.03 h, line at 10N  18,819 km  -> tip at 18,020 km does NOT reach
pear   0.5 lunar masses: day  7.23 h, line at 10N  19,177 km  -> tip at 18,020 km does NOT reach
pear   1.1 lunar masses: day  7.43 h, line at 10N  19,533 km  -> tip at 18,020 km does NOT reach
pear   2.2 lunar masses: day  7.84 h, line at 10N  20,233 km  -> tip at 18,020 km does NOT reach
pear   3.3 lunar masses: day  8.24 h, line at 10N  20,922 km  -> tip at 18,020 km does NOT reach
pear   5.4 lunar masses: day  9.05 h, line at 10N  22,267 km  -> tip at 18,020 km does NOT reach
pear  10.9 lunar masses: day 11.07 h, line at 10N  25,465 km  -> tip at 18,020 km does NOT reach
