Question $2.$ Dynamic Balancing

A rotating shaft has the following out of balance masses, as per the diagram.

The shaft is to be balanced by adding $2$ balancing masses A and $B,$ as follows

$2\mathrm{.}1$ For dynamic balance, what is the radius for the balancing mass, $m_2.$

$2\mathrm{.}2$ For dynamic balance, what is the angle for the balancing mass, $m_2$

$(5$ marks$)$

$2\mathrm{.}3$ For dynamic balance, what is the mass for the balancing mass, $m_b.$

$(5$ marks$)$

$2\mathrm{.}4$ For dynamic balance, what is the angle for the balancing mass, $m_b$