Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Engineering and Comp Sci Homework Help
Maximizing Velocity and Acceleration in a Slider Crank Mechanism
Reply to thread
Message
[QUOTE="hopkid, post: 5021012, member: 403139"] [h2]Homework Statement [/h2] a) For the mechanism shown in figure 1 determine for the angle (45°): i) the velocity (VBO) of the piston relative to the fixed point (O). ii) the angular velocity of AB about point A. iii) the acceleration of point B relative to A. *Note: Link AB is horizontal when angle = 45°. b) Determine the value of the angle (measured from vertical) when: i) the velocity of point b = 0. ii) the angular velocity of link AB a maximum. c) what is the maximum angular velocity of link AB? [h2]Homework Equations[/h2] v=lw (a)r = v^2/l [h2]The Attempt at a Solution[/h2] l of AO = 50mm = 0.05m l of AB = 200mm = 0.2m w of AO = 300 x 2pi/60 = 31.42 rads^-1 ai) V of AO = l of AO x w of AO. V of A0 = 0.05 x 31.42 V of AO = 1.57ms^-1 *Use this value to draw a velocity diagram (attached). To confirm using trig, Sin(45°) = V of BO/1.57 V of BO = 1.57 x Sin(45°) V of BO = 1.11ms^-1 aii) v=lw therefore w=v/l w of AB = v of AB/l of AB w of AB = 1.11/0.2 w of AB = 5.55 rads^-1 aiii) (a of BA)r = v of BA^2/l of BA (a of BA)r = 1.11^2/0.2 (a of BA)r = 6.16ms^-2 *Tangential velocity is calculated in the acceleration diagram (attached). Radial acceleration of AO calculated below to use in the diagram. (a of AO)r = v of AO^2/l of AO (a of AO)r = 1.57^2/0.05 (a of AO)r = 49.3ms^-2 So, as per the diagram, (a of BA)t = 34.5ms^-2. This is the part where I am starting to struggle, I have had conformation back from my tutor that the first 3 parts to the question look good but I am struggling with parts b & c. If someone could help push me in the right direction then it would be very much appreciated. I am after guidance, not answers, I want to learn. [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Engineering and Comp Sci Homework Help
Maximizing Velocity and Acceleration in a Slider Crank Mechanism
Back
Top