RFORCE uses wrong units for rotational velocity

[victorkemp]

It seems to treat the input as in radian/time instead of revolution/time.

Affects commit e7c0d1

Example:
rotational velocity = 1.5 rev/time
omega = 2 * pi * rotational velocity
r = 2
m = 7
F = m * omega**2 * r
= 1243.5701545372592
Reaction force = -F

Mystran:-3.150000E+01 wrong
Comlab: -1.243570E+03 correct

SOL 101
CEND
SPCFORCES = ALL
LOAD = 1
BEGIN BULK
GRID           1       0     0.0     0.0   0.0         0       1
GRID           2       0     2.0     0.0   0.0         0
CELAS2         1   3.0+6       1       1       2       1
RFORCE         2       0       0     1.5     0.0     1.0     0.0
CONM2          2       2       0     7.0
LOAD           1     1.0     1.0       2
ENDDATA