2j - r

j - 2r

3j - r

2j + r

three linear movements

two linear movements and one rotation

one linear movement and two rotations

three rotations

stable and statically determinate

stable and statically indeterminate

unstable

none of the above

(m + r)<2j

m + r = 2j

(m + r)>2j

none of the above

(m + r) = 2j

(m + r) = 3j

(3m + r) = 3j

(m + 3r) = 3j