Question

3. In the mechanism shown in the figure. rocking rod OA of length 1-0.5m rotates about axis O with a uniform angular velocity 1 rad/s and pushes up a slide rod BC moving in vertical slide. Determine the velocity and acceleration of slide rod BC when rocking rod OA makes angle 0-30° with horizontal line. (25 Scores A C No. Date Va A an Lean /s Yea(rad/s We. Yec? VeVesinw. VrE Ve Sinw NE NOSinbo LYad/s(sin30 Vy O.S Tad/s 2 2) a = o,Sdc a = O.5m Yad/ns 5. A diffuse surface at 2000K has the spectral emissivity shown as follows. (20 scores) Determine the total emissivity and the total emissive power. 0.5 0.4 E1 0.2 10 λμm)

Answer 1

Solutin Data OA=OSM Tadly Vec -2 when 0-300 FTA IFoM tigure) シ→VelocAy t BC d-acceleratHn of Bc Ditferentiale w.t to time (t) 05CA0 XI d05Cos8 Vecd05A30 0433 Ms time t Ditterentiatian ot ern ot 051-sine) do Y=-05ino ニ 105 Sind Vg-25 Bし e 30