Consider the mechanism shown in the figure. There is rolling contact without slip between the disc and ground.
Select the correct statement about instantaneous centers in the mechanism.
- Only points $\text{P, Q}$, and $\text{S}$ are instantaneous centers of mechanism
- Only points $\text{P, Q, S}$ and $\text{Tl}$ are instantaneous centers of mechanism
- Only points $\text{P, Q, R, S}$ and $\text{U}$ are instantaneous centers of mechanism
- All points $\text{P, Q, R, S, T}$ and $\text{U}$ are instantaneous centers of mechanism