b. A four bar mechanism ABCD is made up of four links, pin jointed at the ends shown in figure Q1b.AD is a fixed link which is 180 mm long. The links AB,BC and CD are90 mm,120 mm and 120 mm long respectively. At certain instant the link AB makes an angle of 60° with the link AD .If the link AB rotates at a uniform speed of 100 rpm clockwise determine angular velocity of the link BC and CD.
Added by Jose Ignacio M.
Close
Step 1
We know that it rotates at a uniform speed of 100 rpm clockwise. To convert this to radians per second, we use the formula: Angular velocity (in radians per second) = (Angular velocity in rpm) * (2π radians / 1 minute) * (1 minute / 60 seconds) Angular velocity Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 66 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In a four-bar mechanism, the dimensions of the links are given as AB = 50 mm, BC = 66 mm, CD = 56 mm, and AD = 100 mm. At a given instant when ∠DAB = 60°. The angular velocity of link AB is 10.5 rad/s in the counterclockwise direction. Determine: (i) the velocity of point C, (ii) the velocity of point E on link BC when BE = 40 mm, (iii) the angular velocity of link BC and CD, (iv) the velocity of an offset point F on link BC if BF = 45 mm, CF = 30 mm, and BCF is read clockwise, (v) the velocity of an offset point G on link CD if CG = 24 mm, DG = 44 mm, and DCG is read clockwise. (20 Marks)
Adi S.
In a four-bar chain ABCD, Link AD is fixed and is 160 mm long. The crank AB is 40 mm long and rotates at 150 + (23) r.p.m clockwise. While Link CD is 70 mm long and oscillates about point D. BC and AD are of equal length, angle BAD = 60°. Find the angular velocity of Link CD?
Question 4: Consider the following four-bar linkage ABCD below (I know it only has 3 bars, but that is what they are called.) If link CD is being driven with an angular velocity of 4 rad/s, determine the angular velocity of links AB and BC at the instance shown. Note: points A and D are pinned supports to the ground (black ½ circles) and links are connected with pinned joints at B and C (dark circles). Link CD is vertical, and BC is horizontal at the instance shown.
Penny R.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD