# Determine the force F required to give the open link chain a constant velocity v = (dy )/dt The chain has a total length L and mass per mass per unit length λ. Neglect the small size and mass of the pulley and any friction in the pulley.

Q: Determine the force F required to give the open link chain a constant velocity v = (dy )/dt The chain has a total length L and mass per mass per unit length λ. Neglect the small size and mass of the pulley and any friction in the pulley.

(a) $\frac{\lambda v^2}{2} + \lambda g (h -y)$

(b) $\lambda v^2 + \lambda g (h -y)$

(c) $\lambda v^2 + \frac{\lambda g (h -y)}{2}$

(d) $\frac{\lambda v^2 + \lambda g (h-y)}{2}$

Ans: (b)