8.Fig. 7.38 shows the mechanism of a quick return motion of the crank and slotted lever type shapingmachine. The dimensions of the various links are as follows :OA = 200 mm ; AB = 100 mm ; OC = 400 mm ; and CR = 150 mm.The driving crank A B makes 120° with the vertical and rotates at 60 r.p.m. in the clockwise direction.Find : 1. velocity of ram R, and 2. angular velocity of the slotted link OC.[Ans. 0.8 m/s ; 1.83 rad/s]BeB'(on OC)В (oncrank)A60°C(on BD)Fig. 7.38Fig. 7.39120

NAB=60 rpmWAB=2πN/60 =6.283rad/slength of crank AB =100 mm=0.1mvelocity at B isVab=VB=WAB×AB…

machine. The dimensions of the various links are as follows : OA = 200 mm; AB= 100 mm; OC= 400 mm ; and CR = 150 mm. %3B The driving crank A B makes 120° with the vertical and rotates at 60 r.p.m. in the c Find : 1. velocity of ram R, and 2. angular velocity of the slotted link OC. [Ans. 0 Be R C в (on OC) В (on crank) A 60° 120°

machine. The dimensions of the various links are as follows : OA = 200 mm; AB= 100 mm; OC= 400 mm ; and CR = 150 mm. %3B The driving crank A B makes 120° with the vertical and rotates at 60 r.p.m. in the c Find : 1. velocity of ram R, and 2. angular velocity of the slotted link OC. [Ans. 0 Be R C в (on OC) В (on crank) A 60° 120°

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...

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