$[$Problem $4]$

$(20$ points$)$

For the given position of the mechanism shown in the figure,

$3.$ Redraw the mechanism to scale

$(5$ points$)$

$4.$ Draw the force polygons of link # $3$

$(5$ points$)$

$5.$ Draw the force polygons of link # $5$

$(5$ points$)$

$6.$ Determine the required torque to be applied on link # $2.$

$(5$ points$)$

$r_{O_{2}B}=6\mathrm{.}0cm$;$,{}_2^{}=12\mathrm{.}0ra\frac{d}{secCW(constant)}$

$,m_S=50\mathrm{.}0gr$;$,I_{G_s}=6\mathrm{.}5{10}^{-5}kg-m^2$

${}_{G_5}=690c\frac{m}{se{c}^2\text{@}318\text{;},{}_5^{}}=108ra\frac{d}{se{c}^{2}CW}$