A particle moves in a circle of radius $20 \mathrm{cm}$. Its linear speed is given by $v=2t$ where $t$ is in seconds and $v$ in $\mathrm{m} {\mathrm{s}}^{-1}$.Then, 

A particle of mass $m_1$ moves in a circular path of radius $R$ on a rotating table. A string connecting the particles $m_1$ and $m_2$ passes over a smooth hole made on the table as shown in figure. If mass $m_1$ does not slide relative to the rotating table, mark the correct option(s) as applicable.

Column I		Column II
	(i)
	(ii)
	(iii)
	(iv)
	(v)

Match the situation of the particle with the statement given in Column II.
 

 A particle $P$ of mass $m$ is attached to a vertical axis by two strings $AP$ and $BP$ of length $l$ each. The separation $AB=l$. $P$ rotates around the axis with an angular velocity $\omega$. The tensions in the two strings are $T_1$ and $T_2$. Choose the correct option(s).

On a train moving along east with a constant speed $v$, a boy revolves a bob with string of length $l$ on smooth surface of train, with equal constant speed $v$ relative to train. Mark the correct option(s).

Consider the figure shown below. A block $B$ is kept on a rotating rough table over which a man stands. Another man $A$ stands on the ground. Choose the correct option(s).