Question $2$

The MakerSpace at DUT has a flat belt system that is used to transmit power between two shafts via a belt drive with a maximum allowable stress of $3$ MPa $.$ The density of the belt is $1200k\frac{g}{m^3}$ and delivers a power of $6$ kW at $1100$ rpm $.$ The drive is a cross$-$belt and runs at maximum power transmission. The driven pulley rotates at $750$ rpm and the center$-$to$-$center distance of the parallel shafts is double the diameter of the large pulley. Determine:

a$)$ The tangential velocity of the belt drive.

$(4)$

$2$

b$)$ The diameter of the of the large and small pulley.

question $2$ cont.

$q,$

$(4)$

The center$-$to$-$center distance.

$(1)$

The angle of contact between the belt, the small and large pulley in radians.

$(3)$

The length of belt.

$(1)$

The centrifugal stress.

$(1)$

The stress on the slack side, if the coefficient of friction between the pulleys and belt is $=0\mathrm{.}3.$

$(2)$

$[16]$