Problem $2.[5$ Marks$]$

A shaft is supported between two bearings $0\mathrm{.}5$ m apart. It carries a pulley weighing $1200$

N $.$ The tensions in the belts in horizontal direction are $2500$ N and $1250$ N on tight and

slack side respectively. Select the proper bearing for shaft diameter of $50$ mm $.$ There is

$.$an axial thrust of $2000$ N$.$ Life of bearing should be $6000$ hours at $300$ rpm