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Pulley and mass

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In the figure below, the pulley is a soild disk of mass} $M$ $and Radius$ $R$, with rotational inertia
$MR^2/2$. Two blocks, one of mass $m_{1}$ and one of mass $m_{2}$, hang from either side of p-ulley by a light cord. Initially the system is at rest, with Block 1 on the floor and Block 2 held at height h above the floor. Block 2 is then released and allowed to fall.
$\textbf{(a)} \text{what is the speed of block just before it strikes the ground?}$
$\textbf{(b)} \text{What is the angulat speed of the pully at this moment?}$
\textbf{(c)} \text{What's the angulat displacement of the pulley?}$
$\textbf{(d)} \text{How long does it take for Block 2 to fall to the floor?} $


IP属地:广东1楼2014-04-16 06:42回复