Question

In a four-bar linkage, S denotes the shortest link length, L is the longest link length, P and Q are the lengths of other two links. At least one of the three moving links will rotate by
360° if
1) l + s > p + q
2) l + s < p + q
3) l + q < s + q
4) l + p > s + q

Answer 1

At least one of the three moving links will rotate by  360° if - 2) l + s < p + q

Answer 2

2).I+s <p+q is the right answer