The velocity of slider-crank mechanism is given by

(a) \((\omega L / 2)[\sin \theta+(L / 4 l) \sin 2 \theta]\)

(b) \(\left(\omega^{2} L / 2\right)[\sin \theta+(L / 2 l) \sin 2 \theta]\)

(c) \((\omega L / 2)[\cos \theta+(L / 4 l) \cos 2 \theta]\)

(d) \(\left(\omega^{2} L / 2\right)[\cos \theta+(L / 2 l) \cos 2 \theta]\)

where \(L=\) length of stroke, \(I=\) length of connecting rod.

\(\omega=\) angular speed of crank, \(\theta=\) crank angle.